Explanation:
Total volume of the tank
= 85 * 60 * 11
= 56100 m^3
= 56,100,000 L
1L vol. Of tank contains = 50 mg of Hg
56,100,000 L vol. of tank contains
= 56,100,000 * 50
= 2,805,000,000 mg of Hg
= 2805 kg of Hg
A frog jumps vertically upward from a 20m tall building with an initial velocity of 8.1m/s. How high above the ground will the frog reach?
Answer:
Explanation:
Consider the initial position of the frog (20 m above ground) as the reference position. All measurements are positive measured upward.
Therefore,
u = 10 m/s, initial upward velocity.
H = - 20 m, position of the ground.
g = 9.8 m/s², acceleration due to gravity.
Part (a)
When the frog reaches a maximum height of h from the reference position, its velocity is zero. Therefore
u² - 2gh = 0
h = u²/(2g) = 10²/(2*9.8) = 5.102 m
At maximum height, the frog will be 20 + 5.102 = 25.102 m above ground.
Answer: 25.1 m above ground
Part (b)
Let v = the velocity when the frog hits the ground. Then
v² = u² - 2gH
v² = 10² - 2*9.8*(-20) = 492
v = 22.18 m/s
Answer: The frog hits the ground with a velocity of 22.2 m/s
The magnetic field lines outside a bar magnet
a originate from the South poll and end at its
north pole
b) originate from the north pole and end at
its east pole
c) Orginate from the south pole and end at its
west pole
d) origenate from the north pole and ent at its
south pole
Rest and motion are inter-related to each other, explain
Answer:
Rest and motion are the relative terms because they depend on the observer's frame of reference. So if two different observers are not at rest with respect to each other, then they too get different results when they observe the motion or rest of a body.
A ball is dropped off the side of a bridge.
After 1.55 s, how far has it fallen?
Answer:11.7 meters
Explanation: Gravitational acceleration (g)
9.8 m/s²
Initial velocity (v₀)
0 ft/s
Height (h)
11.77225 m
Time of fall (t)
1.55 sec
Velocity (v)
15.19 m/s
A school bus travels 50 km/hr for 0.75 hr. How far did the bus go?
Explanation:
speed = 50 km/h
time = 0.75 hr
dist. = time × speed
dist. = 0.75 × 50
dist.= 37.5 km
Answer:
37.5 km
Explanation:
It is tempting, based on anecdotal evidence, to believe that when we die, we will be ushered into a utopian afterlife. After all, many who have had near death experiences (NDEs) have claimed to "see" friends or loved ones waiting for them. There is no scientific evidence, however, to support these claims. This reminds us of which principle of critical thinking?
Answer:
The need for evidence to support claims by people with Near Death Experience speaks to the 5th principle of scientific (or critical thinking) which states that:
Extraordinary claims require extraordinary evidence.
Explanation:
By evidence, we mean data-based facts.
Cheers
What force is responsible for the increase in potential energy of an object placed higher in the Earth’s atmosphere?
A. Electric Force
B. Frictional force
C. Spring force
D. Gravitational force
Answer:
the answer to your question is letter d
A gas occupies a volume of 100 mL at pressure of 200 kPa. Find its volume at a pressure of 300 KPa.
Answer:
67 mL
Explanation:
Ideal gas law:
PV = nRT
If number of moles (n) and temperature (T) are constant, then:
PV = constant
Therefore:
P₁V₁ = P₂V₂
(200 kPa) (100 mL) = (300 kPa) V
V ≈ 67 mL
PLEASE ANSWER AS QUICK AS POSSIBLE ANSWER WORTH 20 POINTS
A material’s density is the same, no matter how large or small the sample is, or what its shape is, as long as it is a solid, uniform piece of the material. Explain how this is possible and give an example.
Answer:
The density of balsa wood is about 170 kg/m^3.
Explanation:
happy to help :)
The gravitational strength on Earth is less than the gravitational strength on Jupiter. What will happen to a satellite when it travels from Earth to Jupiter? a Its mass will increase. b Its mass will decrease. c Its weight will increase. d Its weight will decrease.
Answer:
weight will decrease
Explanation:
this is because mad stays the same no matter what so it was between this and weight increases
Answer:
Its weight will decrease.
Explanation:
just because
Which statement accurately describes the outer planets?
Pluto is one of the outer planets.
The outer planets are also called rocky planets.
The outer planets have thin atmospheres.
The outer planets have a high gravity due to their large size.
Answer:
D or the one that is boldExplanation:
Which statement accurately describes the outer planets?
Pluto is one of the outer planets.
The outer planets are also called rocky planets.
The outer planets have thin atmospheres.
The outer planets have a high gravity due to their large size.
The outer planets have a high gravity due to their large size is the statement that accurately describes the outer planets, therefore the correct answer is option D
What is a solar system?It is a system that collection of all the planets and spatial bodies revolving around the sun because of the gravitational pull of the sun.
Our Solar System is based on a heliocentric model in which the Sun is assumed to reside at the central point of the planetary system.
In general, the outer planets are larger than the inner planets. They have extremely large and dense atmospheres and are made of gases. These planets have stronger gravitational pulls because they are larger overall and have more mass.
Thus, The statement that most accurately describes the outer planets is "The outer planets have a high gravity due to their large size," so option D is the appropriate response.
Learn more about Solar System
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the space shuttle used three parachutes to land in the image at the start of the project. Why did the space shuttle engineers use multiple parachutes in this situation? Why not use one giant parachute? Explain your answer.
Answer:
Sep 9, 2008 - Image above: In the Parachute Refurbishment Facility at NASA's ... His parachute, when opened, had a canopy that resembled a huge umbrella. ... Space Center used mainly to process space shuttle parachutes, United Space ... Hillebrandt also is lead engineer for the Constellation Program's Ares 1 rocket ...
Explanation:
Sep 9, 2008 - Image above: In the Parachute Refurbishment Facility at NASA's ... His parachute, when opened, had a canopy that resembled a huge umbrella. ... Space Center used mainly to process space shuttle parachutes, United Space ... Hillebrandt also is lead engineer for the Constellation Program's Ares 1 rocket ...
Answer:
Managing large amounts of data and processing them quickly during communication between Earth and space is challenging.
Which technology is most suitable to overcome this challenge?
Using camera imaging and wireless communication
Explanation:
m
The density of an object has the equation d=
If an object has a mass of
V
2.5 g and a volume of 1.3 cm3, what is its density?
Answer:
The answer is 1.92 g/cm³Explanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question
mass = 2.5 g
Volume = 1.3 cm³
We have
[tex]density = \frac{2.5}{1.3} \\ = 1.923076...[/tex]
We have the final answer as
1.92 g/cm³Hope this helps you
A particle travels along a straight line with a velocity v = (12 - 3t) m/s, where t is in seconds. When t = 1 s, the particle is located 10 m to the left of the origin. Determine the acceleration when t = 4 s. the displacement from t = 0,t = 10 s, and the distance the particle travels during this time period. a 9 2. A sphere is fired downwards into a medium with an initial speed of 27 m/s. If it experiences a deceleration of a = (-6t) m/s2 ,where t is in seconds, determine the distance traveled before it stops.
Answer:
(1).The acceleration is -24 m/s²
The total distance is 912 m.
(2). The distance traveled before it stop is 78 m.
Explanation:
Given that,
Velocity = (12-3t^2) m/s
When t = 1 s, the particle is located 10 m to the left of the origin.
We need to calculate the acceleration at t = 4 sec
Using formula of acceleration
[tex]a=\dfrac{dv}{dt}[/tex]
Put the value of v
[tex]a=\dfrac{d}{dt}(12-3t^2)[/tex]
[tex]a=-6t[/tex]
Put the value of t
[tex]a=-6\times4[/tex]
[tex]a=-24\ m/s^2[/tex]
The displacement from t = 0,t = 10 s, and the distance the particle travels during this time period.
We need to calculate the distance
Using formula of distance
[tex]ds=v\ dt[/tex]
[tex]\int_{-10}^{s}=\int_{1}^{t}{v}dt[/tex]
Put the value of v
[tex]\int_{-10}^{s}=\int_{1}^{t}{ (12-3t^2)}dt[/tex]
[tex]s+10=12t-t^3-11[/tex]
[tex]s=12t-t^3-21[/tex]
At t = 0,
[tex]s_{t=0}=-21[/tex]
At t = 10,
[tex]s_{t=10}=12\times10-10^3-21[/tex]
[tex]s_{t=10}=-901[/tex]
The displacement is
[tex]\Delta s=-901-(-21)[/tex]
[tex]\Delta s=-880\ m[/tex]
The distance at t= 2 sec
[tex]s_{t=2}=12\times2-2^3-21[/tex]
[tex]s_{t=2}=-5[/tex]
The total distance will be,
[tex]s_{T}=(21-5)+(901-5)[/tex]
[tex]s_{T}=912\ m[/tex]
(2). We need to calculate the distance at 2 sec
Using equation of motion
[tex]s=ut-\dfrac{1}{2}at^2[/tex]
Put the value into the formula
[tex]s=27\times 2+\dfrac{1}{2}\times6\times(2)^3[/tex]
[tex]s=78\ m[/tex]
Hence, (1).The acceleration is -24 m/s²
The total distance is 912 m.
(2). The distance traveled before it stop is 78 m.
How, if at all, would the equations written in Parts C and E change if the projectile was thrown from the cliff at an angle above the horizontal? Explain your answer.
Answer:
x = v₀ cos θ t , y = y₀ + v₀ sin θ t - ½ g t2
Explanation:
This is a projectile launch exercise, in this case we will write the equations for the x and y axes
Let's use trigonometry to find the components of the initial velocity
sin θ = [tex]v_{oy}[/tex] / v₀
cos θ = v₀ₓ / v₀
v_{y} = v_{oy} sin θ
v₀ₓ = vo cos θ
now let's write the equations of motion
X axis
x = v₀ₓ t
x = v₀ cos θ t
vₓ = v₀ cos θ
Y axis
y = y₀ + [tex]v_{oy}[/tex] t - ½ g t2
y = y₀ + v₀ sin θ t - ½ g t2
v_{y} = v₀ - g t
v_{y} = v₀ sin θ - gt
[tex]v_{y}^{2}[/tex] = v_{oy}^2 sin² θ - 2 g y
As we can see the fundamental change is that between the horizontal launch and the inclined launch, the velocity has components
Why is the force of gravity on your body weaker on the Moon than on the Earth?
Answer:
The moon’s gravity is weaker than the earth gravity due to the smaller in size as compared to the earth. As there is no atmosphere present on the moon gravity, so there are fewer chances of withstanding temperature.
Please mark as brainliest
Which of the following numbers with units represents a velocity of an object?
W
30 m/s East
O a
Oh
30 m East
Ос
30 m
30 m/s
Answer:
30 m/s East
Explanation:
Velocity must have a speed unit (m/s) and a direction. The only one that satisfies the conditions is 30 m/s East.
What is the speed of a jet plane that flies 7200 km in 9 hours (in km/hr)?
Changes in forms of energy are called energy?
Answer:
Energy transformation
Explanation:
Energy transformation is when energy changes from one form to another.
3. Which type of wires (copper, aluminum, or string) are ferromagnetic metals?
Copper isn't ferromagnetic,
Aluminum isn't ferromagnetic,
String has a ferromagnetic property
Answer:
i think its aluminum
Explanation:
In order to use the Pythagorean theorem to find the magnitude of a resultant vector, which must be true regarding the
two initial vectors?
They form a 90 degree angle.
O They are equal in magnitude.
They have the same directions.
They are parallel to one another.
Answer:A Ed 2020
Explanation:
In order to use the Pythagorean theorem to find the magnitude of a resultant vector, two initial vectors must form a 90 degree angle.
What is Pythagorean theorem?The Pythagorean theorem, sometimes known as Pythagoras' theorem, is a basic relationship between a right triangle's three sides in Euclidean geometry.
In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem. These triangle's three sides are known as the Perpendicular, Base, and Hypotenuse.
Due to its position opposite the 90° angle, the hypotenuse in this case is the longest side. When the positive integer sides of a right triangle (let's say sides a, b, and c) are squared, the result is an equation known as a Pythagorean triple.
Hence, two initial vectors must form a 90 degree angle.
Learn more about Pythagorean theorem here:
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what is measurement? why is it important to have regular supervision of the weights and measurement in the market?
Answer:
The comparison of unknown quantity with known quantity is called measurement.
adjectives for the word probable are......
A anticipated
B foreseeable
C expected
D all of the above
the answer for the question is D. all of the above
Hi, Solve for λ
E=hc/λ
Answer:
λ=hc/E
Explanation:
E=hc/λ
Eλ=hc
λ=hc/E
While timing a pendulum, Mr. Cantor notices that it takes 9.34 s for a
pendulum to complete 6 complete swings. What is the period of this
pendulum?
9.34s
1.56 s
6s
0.64s
The hooked tips of burdock seeds catch onto the hair of passing cows. The seeds are dispersed in this way to other places by the cow. The cow is unaffected by this process. What is the name of the relationship that exists between the burdock and the cow
I will mark brainliest if correct!
Answer:
Commensalism is the relationship
Explanation:
This type of relationship is between individuals of two species in which one species obtains food or other benefits from the other without either harming or benefiting the latter.
Answer:
C, Commensalism
Explanation:
the Burdock seed attaches itself without harming to cow meanwhile the cow helps spread it's seed to a further location where the seed will grow
which two explanations are based on personal beliefs
Answer: 1: A constellation position in the night sky can be used to predict events in a personal life
2: certain mineral crystals have properties that help protect the body From illness
Explanation: I just took the test
Which best describes most covalent compounds?
O soft
O brittle
3
O cold
O warm
Answer: Brittle
Explanation:
took the test and I chose Soft, Soft is the wrong answer don't choose it. The CORRECT ANSWER IS BRITTLE
Answer:
B. Brittle
Explanation:
took the quiz on Edge and got it right
And a %100 on the quiz.
MICROWAVE
What form of electromagnetic radiation does it use?
Describe the frequency and wavelength range of this type of electromagnetic wave.
Using the information above and details from your research, write a paragraph of five sentences or more explaining how the device uses the behavior and characteristics of the electromagnetic wave to function. Remember the writing tips from the lesson, and use facts and details to explain your topic sentence.
You must include citations for all reliable sources used. Include citations from three or more reliable sources.
Answer:
Microwave is used to heat the food and uses a different form of electromagnetic radiation. The form of electromagnetic radiation used in microwaves are radio waves and infrared radiation.
The frequency of such electromagnetic waves is 2,450 megahertz (2.45 gigahertz) and the wavelength range is approximately of 30 cm (frequency = 1 GHz) to 1 mm (300 GHz).
Microwaves or electromagnetic radiation produced by a magnetron, an electron tube in the microwave. The cavity of the magnetron cavity magnetron produces electromagnetic waves defined wavelength. Electromagnetic radiation strikes within the metals in the microwave and is absorbed by food. Electromagnetic radiation allows the vibration of water molecules in the food and makes the food hot.
Answer:
Describe the device and its function.
A microwave has electro-magnetic waves. A microwave also heats up and cooks food.
What form of electro-magnetic radiation does it use?
They use infrared radiation.
Describe the frequency and wavelength range of this type of electro-magnetic wave.
Their frequencies are between 300 mhz and 300 ghz. A microwaves wavelength is around 30 centimeters.
Using the information above and details from your research, write a paragraph of five sentences or more explaining how the device uses the behavior and characteristics of the electro-magnetic wave to function. Remember the writing tips from the lesson, and use facts and details to explain your topic sentence.
The microwave heats up food and also cooks it. The form of the electro-magnetic radiation they use is “infrared”. A microwaves wavelength is also around 30 centimeters. Their frequencies run between 300 mhz and 300 ghz. Microwaves use the radiation as heat and power to warm their surroundings such as food placed in microwaves. A microwave can also be found right in your kitchen. Microwaves can heat up about almost everything, even metal. That is also the reason why you should not place any silverware in a microwave, because it can create an electrical current, causing it to explode out of control.
11. A bicycle with an initial velocity of +6 m/s accelerates at a rate of +2 m/s2 for 3
seconds. What distance does the bicycle travel during this time?
C С
18 m
9 m
27 m
36 m
Answer:
[tex]\huge\boxed{\sf S = 27 m}[/tex]
Explanation:
Given:
Initial Velocity = [tex]\sf V_{i}[/tex] = 6 m/s
Acceleration = a = 2 m/s²
Time = t = 3 secs
Required:
Distance = S = ?
Formula:
[tex]\sf S = V_{i}t + \frac{1}{2} at^2[/tex] (Second Equation of Motion)Solution:
S = (6)(3) + 1/2 (2)(3)²
S = 18 + 9
S = 27 m
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AnonymousHelper1807Answer:
S=27 m
Explanation:
