Answer:
75000 mph
Explanation:
Explanation:
1 hr= 3600 sec
speed( miles/ sec)= 2500/3600
speed= 0.6944 miles/sec
speed=dis./time
0.6944= dis./30
dis.= 30 ×0.6944
dis.= 20.832 miles
People playing a basketball game in a gymnasium make up a close system with 17,125 J of energy. At the beginning of the game the system has 16,250 J of mechanical energy, and at the end it has 1135 J of mechanical energy. How much of the total energy is transformed into thermal energy during the game
Answer: 15,115 J
Explanation: --APEX-- JUST TOOK THE TEST
Answer:
15,115 J
Explanation:
What causes an impact crater to form?
Answer:
it is the impact of a meteorite, volcanic activity, or an explosion.
BRAINLIEST
20 seconds after launch, a space shuttle would be traveling skyward at a velocity of 139 m/s. What was its average acceleration during the first 20 seconds of the launch? *
A. 0 m/s²
B. 0.14 m/s²
C. 5 m/s²
D. 6.95 m/s²
It took the space shuttle 500 seconds to reach orbital speed of 7823 m/s. What was its average acceleration during this time? *
A. 14.406 m/s²
B. 13.158 m/s²
C. 10.803 m/s²
D. 15.646 m/s²
E. 10.861 m/s²
The space shuttle orbited at a speed of approximately 7823 m/s. How long would it take to travel 100 meters at this speed? *
A. 782, 300s
B. 7723 s
C. 782.3 s
D. 0.013 s
When a space shuttle's boosters were ignited, the shuttle experienced an acceleration of approximately 15 m/s². The launch tower was approximately 60 meters tall. How fast was the shuttle moving when it
Answer:
Explanation:
1) acceleration is the change in velocity of a body with respect to time.
acceleration = velocity/time
Given
velocity = 139m/s
time = 20secs
acceleration = 139/20
acceleration = 6.95m/s²
Hence its average acceleration during the first 20 seconds of the launch is 6.95m/s²
2) Speed is the rate of change of distance with respect to time.
average speed = distance/time
Time = distance/speed
Time = 100/7823
Time = 0.013s
3) Using the equation of motion v² = u²+2as
v² = 0²+2(15)(60)
v² = 30*60
v² =1800
v = √1800
v = 42.43m/s
The mass of a fully loaded Boeing 747 is abput 4,082,331.33 kg. If it is cruising eastward at a velocity of 253 m/s, what is its momentum?
Answer:
1,032,829,826.49kgm/sExplanation:
Momentum is defines as the product of mas of a body and its velocity,
Given
Mass of Being 747 =
Velocity = 253m/s
Required
Momentum of the body
Substituting the required value into the formula;
Momentum = 4,082,331.33 kg * 253
Momentum = 1,032,829,826.49 kgm/s
Therefore the momentum of the body is 1,032,829,826.49kgm/s
The momentum of fully loaded Boeing 747 is [tex]1.032 \times 10^{9} \;\rm kg.m/s[/tex].
Given data:
The mass of fully loaded Boeing 747 is, m = 4,082,331.33 kg.
The velocity of cruising is, v = 253 m/s.
The concept of momentum says that the impact created by the applied force is known as momentum. It is expressed as product of mass and velocity.
Then the expression is,
p = mv
Soling as,
[tex]p = 4,082,331.33 \times 253\\\\p=1.032 \times 10^{9} \;\rm kg.m/s[/tex]
Thus, we can conclude that the momentum of fully loaded Boeing 747 is [tex]1.032 \times 10^{9} \;\rm kg.m/s[/tex].
Learn more about the momentum here:
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2. A 55 kg woman has a momentum of 200 kg m/s. What is her velocity?
Use: V= p/m to determine the velocity.
Hurry And Help !!!!!
Answer:
[tex]\boxed {\tt 3.63636364 \ m/s}[/tex]
Explanation:
Velocity can be found using the following formula:
[tex]v=\frac{p}{m}[/tex]
where p is the momentum and m is the mass.
The woman has a mass of 55 kilograms and a momentum of 200 kilogram meters per second.
[tex]p= 200 \ kgm/s\\m=55 \ kg[/tex]
Substitute the values into the formula.
[tex]v=\frac{200 \ kg m/s}{55 \ kg}[/tex]
Divide. Note that the kilograms, or kg, will cancel each other out.
[tex]v=\frac{200 \ m/s}{55}[/tex]
[tex]v= 3.63636364 \ m/s[/tex]
The woman's velocity is 3.63636364 meters per second.
One particle has a charge of 2.15 x 10^ -9 while another particle has a charge of 3.22 x 10^ -9 If the two particles are separated by 0.015 m, what is the electromagnetic force between them? A. 4.31 x 10^ -7 N B. 2.77 x 10^ -4 N C. 4.15 x 10^ -6 N D. 6.22 x 10^ -4 N
Answer:
B. 2.77 x [tex]10^{-4}[/tex] N
Explanation:
The required force can be calculated by:
F = [tex]\frac{Kq_{1}q_{2} }{d^{2} }[/tex]
Where F is the force between the particles, K is the coulomb's constant (9 x [tex]10^{9}[/tex] [tex]Nm^{2}/C^{2}[/tex]), [tex]q_{1}[/tex] is the charge on the first particle, [tex]q_{2}[/tex] is the charge on the second particle and [tex]d^{2}[/tex] is the distance between the particles.
So that:
F = [tex]\frac{9*10^{9}*2.15*10^{-9} *3.22*10^{-9} }{(0.015)^{2} }[/tex]
= [tex]\frac{6.2307*10^{-8} }{(2.25*10^{-4} }[/tex]
= 2.7692 x [tex]10^{-4}[/tex]
The force between the particles is 2.77 x [tex]10^{-4}[/tex] N.
Answer:
b
Explanation:
a pex
A suitcase has a mass of 22.5 kg. This means it weighs
N.
Answer:
The suitcase weighs 225N
Explanation:
Weight can be defined as the force of gravity acting on an object. The unit of the weight of an object is Newton because it is a force.
Given that mass = 22.5
Weight = ?
Weight = mass × acceleration due to gravity.
Acceleration due to gravity = 10m/s2
W = mg
W = 22.5 × 10
W = 225N.
Hence, the suitcase weighs 225N.
4
What is the mass of 29.7 moles of chromium atoms? Round your answer to the nearest hundredth. Be sure to include units.
Answer:
The answer is 0.019232211646643. We assume you are converting between moles Chromium and gram. You can view more details on each measurement unit: molecular weight of Chromium or grams The molecular formula for Chromium is Cr. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Chromium, or 51.9961 grams. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between moles Chromium and gram. Type in your own numbers in the form to convert the units!
Answer:
0.019232211646643
Explanation:
please give me brainiest
why does it take mars over 500 days to orbit the sun?
Answer:
Mar's orbital path is more than that of Earth, thus it takes more number of days to orbit around the sun.
Explanation:
Mars takes over 500 days to orbit all the way around the sun than Earth because its distance from the sun (228 million kilometers) is greater than that of Earth (150 million kilometers) which takes it 365 days.
Planets that orbit closer to the sun take shorter time to orbit around the sun because the cover a shorter orbital distance and orbit faster than those planets further from the sun.
For example
Using Earth's distance from the sun, 150 million kilometers and the number of days taken to orbits the sun ,365 days and the distance Mars is from the Earth, 228 million kilometers, you can approximate the time Mar takes to orbit the sun as:
Earth 150 million kilometers = 365 days
Mars 228 million kilometers= ?
Cross product ; (228 *365) /150 =555 -----(a value closer to that in the question)
The rocket that sent us to the moon traveled at 25,000 mi hr convert to miles per second
what is seismograph
Answer:
[tex] \boxed{ \sf{See \: below}}[/tex]
Explanation:
Seismograph is a computerized instrument that measures the intensity , origin and speed of the earthquake.
Hope I helped!
Best regards! :D
~[tex] \sf{TheAnimeGirl}[/tex]
A car engine uses the combustion of fuel to move a system of gears that
move its wheels. Not all of the fuel's energy is transferred to the wheels,
Which two options describe what happens to the rest of the energy?
O A. Some energy is lost because it is transformed into chemical
energy
B. Some energy is lost because it is transformed into potential
energy
C. Some energy is lost because of the friction between the gears.
D D. Some energy is lost because it is transformed into thermal
energy
O E. Some energy is lost because it is absorbed by the driver
Answer: C and D
Explanation: I just took took the test
Answer:
The correct answers are C and D.
Explanation:
The friction of the car's moving parts rubbing up against each other and the thermal energy created by the combustion of the car's fuel both create heat that will take away from the energy from the fuel that is transferred to the car's wheels.
In short, some of the energy was not transferred to the wheels because the gears and the combustion create heat.
3. A Japanese bullet train slows from a speed of 50 m/sec to a speed of 40 m/sec in 500m.
What is its acceleration?
Answer:
-0.9 m/s²
Explanation:
Given:
Δx = 500 m
v₀ = 50 m/s
v = 40 m/s
Find: a
v² = v₀² + 2aΔx
(40 m/s)² = (50 m/s)² + 2a (500 m)
a = -0.9 m/s²
A bullet train moves with an initial velocity of 50 m/s final velocities of 40 m/s, and it covers 500 meters, so the acceleration will be -0.9 m/s².
What is acceleration?Acceleration is the term that describes the pace at which the speed and direction of a motion change over time. Anything moving faster or slower inside a straight line is said to be accelerating. Even if the speed is constant, travel on a circle accelerates also because the direction of motion is always changing.
From the given information in the question,
Initial velocity, u = 50 m/s
Final velocity, v = 40 m/s and,
Distance, s = 500 meters
Use equation of motion to find the acceleration of the train :
v² - u² = 2as
(40)² - (50)² = 2(a)(500)
a = -900/1000
a = -0.9 m/s².
Therefore, the acceleration of the bullet train is -0.9 m/s².
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why doesnt food have energy
Oh it has ! It has ! That's exactly where you get all the energy you use to think, breathe, and move.
A cyclist decelerates from 4.6m/s to a stop in .29 minutes. What is the negative acceleration for the cyclist?
Answer:
a = 0.264 [m/s^2]
Explanation:
We can find the deceleration value using the following formula of kinematics:
[tex]v_{f} =v_{o} - (a*t)[/tex]
The final speed is taken as zero as the rider stops completely and the acceleration sign in the equation is taken as negative as the rider is slowing down.
Vf = final velocity = 0
Vo = initial velocity = 4.6 [m/s]
t = time = 0.29 [min] = 0.29*60 = 17.4 [s]
0 = 4.6 - (a*17.4)
-4.6 = - 17.4*a
a = 0.264 [m/s^2]
where does most of earths available carbon come from
HELP ANSWER QUESTION 1
If the unbalanced force is -20.0 N and the mass of the object is 3.75 kg, what is the acceleration of the the object while this force is acting?
Answer:
a=-5.3m/s2
Explanation:
F=-20N
m=3.75kg
a=?
F=am /:m
a=F/m
a=-20N/3.75kg
a=-5.3m/s2
When water (H2O) freezes into ice, some of the properties have changed. What stays the same?
identity of the H2O
energy of the H2O
arrangement of the H2O
property of the H2O
Answer:
A identity
Explanation:
got it right on edge
Answer:
The identity of the H2O is what stays the same. The singular answer is A. identity of the H2O
Explanation:
I just took the test and made a 100%! I know that you can too bb i love you!! I hope you have a really great day.
.How many electrons are in 0.4 C?
Answer:
There are 2.5 x 10¹⁸ electrons in 0.4 C.
Explanation:
The charge of one electron = 1.602 x 10⁻¹⁹ C
Therefore, the number of electrons in 0.4 C is calculated as follows;
1.602 x 10⁻¹⁹ C -------------> 1 electron
0.4 C --------------------------> x
x = (0.4 ) / (1.602 x 10⁻¹⁹)
x = 2.5 x 10¹⁸ electrons
Therefore, there are 2.5 x 10¹⁸ electrons in 0.4 C.
1.Explain frame of reference. How is it different when you are riding inside a car or standing by the highway?
2. Explain Newton’s three laws of motion.
3. When riding in a car that suddenly stops, how is it different when you are wearing a seatbelt or not? Explain how Newton’s laws apply.
4. Define force.
5. Explain balanced and unbalanced force.
6. Describe the four fundamental forces? Arrange them from weakest to strongest.
7. What is work and power and their relationship?
Answer:
See explanation
Explanation:
A frame of reference simply refers to a set of coordinates which is used to determine the position and velocity of objects all the objects found in that particular frame. The person inside the car and standing by the highway are in different frames of reference.
Newtons first law of motion states that an object will continue to be at rest or in a state of uniform velocity until it is acted upon by an external force.
Newtons second law states that rate of change of momentum is directly proportional to the impressed force.
Newtons third law states that action and reaction are equal and opposite.
The action of applying brakes leads to an equal reaction of a sudden forward movement. Seat belts help to prevent the occupants of a car from being injured by the sudden stoppage of the car.
Force is simply defined as a push or pull.
Balanced forces do not lead to acceleration of a body but an unbalanced for leads to acceleration of a body.
strong nuclear force, electromagnetic force, weak nuclear force and gravity
Power is the rate of doing work while week is said to be done when the force applied moves a distance in the direction of the force. Power is defined as work/time.
While traveling along a highway a driver slows from 48 m/s to 30 m/s in 12 seconds. What is the automobile’s acceleration?
Answer:
-1.5 m/s^2
Explanation:
Acceleration is Final velocity - Initial Velocity/Time (seconds)
30-48= -18
-18/12 = -1.5
-1.5 m/s^2
Convert 83 F to Kelvin
Explanation:
Formula:
F*255.92778=K
83 F *255.92778=301.48k
therefore the answer is:
301.48K
you can loose your flexibility?
True or false?
Answer:
true
Explanation:
if you stretch a lot and try different/harder things you will become more flexible
6845 rounded to three significant figures.
Which of the following procedures demonstrates repetition?
A.
Marco places a toy car at the top of a ramp. He releases the car and measures how long it takes for the car to reach the bottom of the ramp. Then, he returns the car to the top of the ramp, releases the car again, and makes an additional measurement.
B.
Kasey performs a scientific investigation on the effects of using soda instead of water to hydrate plants. Caleb uses Kasey's procedure and performs the same experiment during the following month.
C.
Jeremiah measures the mass of five different strips of metal. He places the strips in five different test tubes filled with hydrochloric acid. He observes if heat and bubbles are produced after the metal strips and acid are combined.
D.
Cynthia monitors the growth rate of her pet turtle. She measures the length and weight of her turtle every Sunday over the course of six months.
Answer: A. Marco places a toy car at the top of a ramp. He releases the car and measures how long it takes for the car to reach the bottom of the ramp. Then, he returns the car to the top of the ramp, releases the car again, and makes an additional measurement
HEY CAN ANYONE HELP ME OUT IN DIS PLS!!!!!!
Explanation:
Energy is involved in changes of state because the energy of particles of matter determines the matter's state.
Changes of state are physical changes in matter.
Energy must be absorbed to change a liquid to a gas.
Sublimation is solid to gas (no liquid involved).
1 D
2 False
3 True
4 D
Question 5 (2 points)
The goal is to increase the power. Therefore, it is necessary to (2 points)
decrease the work being done and decrease the time in which the work was completed
Ob
Ос
decrease the work being done and increase the time in which the work is completed
increase the work being done or decrease the time in which the work is completed
increase the work being done and increase the time in which the work was completed
Answer:
Increase the work being done or decrease the time in which the work is completed
Explanation:
I got it right on the quiz i just took :)
What does EMR tell us about wavelength, amplitude, and frequency?
Answer:
Amplitude is one-half the height of the wave from peak to trough. Wavelength and frequency are inversely proportional: As the wavelength increases, the frequency decreases.
I hope this helps in a way...
A flip is also called ___.
Answer:
A flip is also called a reflection
