Answer:
5.56 x 10⁻⁴ degree
Explanation:
1 degree = 60 arc minutes
1 minute = 60 arc second
1 degree = 60 x 60 = 3600 arc second .
3600 arc second = 1 degree
1 arc second = 1 / 3600 degree = 2.78 x 10⁻⁴ degree
2 arc second = 5.56 x 10⁻⁴ degree .
A 7.30-kg bowling ball is on a storage rack that is 1.12 m above
the floor. The bowling ball suddenly falls and narrowly misses
I
your toes,
Answer:
80.12J
Explanation:
Given parameters:
Mass of the bowling ball = 7.3kg
Height of the storage rack = 1.12m
Unknown:
Energy the ball would have exerted = ?
Solution:
To solve this problem, the potential energy is the best parameter to use.
Potential energy is the energy due to the position of a body. It is expressed as:
Potential energy = mass x gravity x height
So;
Potential energy = 7.3 x 9.8 x 1.12 = 80.12J
How is the kinetic energy of molecules changing when the molecules move faster? The kinetic energy . . .
Answer:
Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles. With an increase in temperature, the particles move faster as they gain kinetic energy, resulting in increased collision rates and an increased rate of diffusion
Explanation:
5. It takes you 5 hours to complete a 375-kilometer trip. What was your average speed on this trip?
Answer:
the average speed on this trip is 75 km/h
Answer:
75 km/h
Explanation:
2 Select the correct answer. How many points are awarded for a soccer goal? OA. OB. 2 OC. 3 O D. 7
Answer: oa
Explanation:
The force of friction between an object and the surface upon which it is sliding is 14N and the coefficient of friction between them is 0.72. What is the weight of the object?
Answer:
14 x 0.27 = 3.78 is your answer
Explanation:
the question is asking for the weight of the object so you multiply and get 3.79
1.) What is the equation for Average Speed?
if i fly to space without a space suit what color is the air
Answer:
well you'd be dead
Explanation:
Answer:
You can go to space without a suit if you capsule has a pressured cabin.
Explanation:
But, to go out side of the unit, you need a pressure suit with oxygen. No body knows really what color space really is. But we will know soon. However, they say it smells like garbage and methane when they open the locks on the ISS to get cargo in. God Bless.
Electromagnetic Field concept was observed and discovered by whom?
Answer:
James Clerk Maxwell
Who observed and discovered the electromagnetic field concept? Many physicists experimented with electromagnetic fields, but it was James Clerk Maxwell who discovered that they are actually electromagnetic in nature and they (at the classical level) are accurately described by his famous equations.
Explanation:
What is the Gravitational Potential Energy of a 30kg block resting 5m above the ground?
O 150 J
O 1500 )
O 6J
O 60)
Answer:
1470J
Explanation:
Given parameters:
Mass of the block = 30kg
Height = 5m
Unknown:
Gravitational potential energy = ?
Solution:
The Gravitational potential energy of body is due to its position above the ground level.
Gravitational potential energy = mass x acceleration due to gravity x height
So;
Gravitational potential energy = 30 x 9.8 x 5 = 1470J
complete the sentences
A flow of negatively charged electrons is an ____________
Answer:
a flow of negatively charged electrons is an
electric current
A wave with a frequency of 32 Hz has a wavelength of 9 meters. At what speed will this
wave travel?
Answer:
228 m/s
Explanation:
f = 32 Hz
λ = 9 m
v = ?
v = f λ
v = (32 Hz) (9 m)
v = 288 m/s
If a car is moving at a constant velocity of 10 m/s, what is its acceleration?
10 m/s
10 m/s^2
0 m/s^2
1 m/s^2
Answer:
If a car is moving at a constant velocity of 10 m/s, there will be no change in the velocity per time.
Acceleration is the rate of change of velocity
Acceleration=(Final velocity-Initial velocity)/Time
Acceleration=(10m/s-10m/s)/Time= 0 m/s²
★ 0 m/s² is the right answer.In a longitudinal wave, amplitude can be measured
from the distance between high pressure areas of
the wave called
will give brainliest please help me
Answer:
Compressions
Explanation:
A longitudinal wave is a wave in which the direction of propagation of the wave and the direction of the displacement of the particles of the wave are parallel.
As the wave propagates, the particles do not move, but, oscillate back and forth about their equilibrium position, and there are thus regions of high pressure called compressions and regions of low pressure called rarefactions.
The amplitude is thus the distance between successive compressions.
Which particle is a negatively charged ion?
A.Hydrogen (H) with 1 proton, 0 neutrons, and 1 electron
B.Sodium (Na) with 11 protons, 12 neutrons, and 10 electrons
C.Magnesium (Mg) with 12 protons, 12 neutrons, and 12 electrons
D.Chlorine (CI) with 17 protons, 18 neutrons, and 18 electrons
Answer:
option D is correct
Explanation:
cl has 17 electrons if it has 18 it becomes cl-
The particle that is negatively charged is Chlorine (CI) with 17 protons, 18 neutrons, and 18 electrons. The correct option is D.
What is an ion?An ion is a gross electrically charged molecule or atom. By convention, the charge of an electron is considered to be negative, and this charge is equal to and opposite to the charge of a proton, which is considered to be positive.
These are found in a wide range of instruments, including mass spectrometers, optical emission spectrometers, particle accelerators, ion implanters, and ion engines.
They are also used in air purification by disrupting microbes, as well as in household items such as smoke detectors, as reactive charged particles.
When particles acquire or lose electrons, ions form. Because electrons are negatively charged, losing one or more electrons causes an atom to become positively charged; gaining one or more electrons causes an atom to become negatively charged.
Thus, the correct option is D.
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How would the elastic potential energy change if the displacement is multiplied by five?
Answer: Work is done when a spring is extended or compressed . Elastic potential energy is stored in the spring. The elastic potential energy stored can be calculated using the equation: elastic potential energy = 0.5 × spring constant × (extension) 2.
Explanation: can you please mark me as brainliest
Pls help I really need help w this one Tnks
what energy does a car have when you fill it up
Answer:
mechanical energy
Explanation:
Answer:
When you fill it up its chemical energy but it gets transformed into mechanical energy.
Explanation:
The internal combustion engine, which is utilized in most automobiles, has allowed for the transfer of chemical energy into mechanical energy. This provides locomotion for the vehicle as it is driving.
a car is traveling at 20 meters/seconds anf is brought to rest by applying breaks over a period of 4 seconds. what is its average acceleration over this time in time interval
Answer:
2.5m/s²
Explanation:
Given the following:
Initial velocity u = 0m/s
Final velocity v = 20m/s
Time t = 4s
Required
average acceleration over this time in time interval
Using the equation of motion
v = u + at
10 = 0 + a(4)
10 = 4a
a = 10/4
a = 2.5m/s²
Hence its average acceleration over this time in time interval is 2.5m/s²
How does the launch angle affect the maximum height reached by a ground launched projectile?
Answer:
The maximum height is determined by the initial vertical velocity. Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the maximum height.
Explanation:
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Calculate the average speed of a toy car that travels 20m in 40s
Answer:
2 per s
Explanation:
divid 40 and 20 it gives you = 2
Answer:
2m in 4s
Explanation:
A car has a displacement of –140 miles.
If east is taken as the positive direction, which option correctly describes the displacement of the car?
The car is east of its starting position but is moving toward the west.
The car is west of its starting position.The car is west of its starting position. , ,
The car is west of its starting position but is moving toward the east.
The car is east of its starting position.
Answer:The car is east of its starting position but is moving toward the west.
Explanation:
A 40 kg dog is sitting on top of a hillside and has a potential energy of 1,568 J. What is the height of the hillside? (Formula: PE = mgh)
3.9 m
4.0 m
39.2 m
40.0 m
Answer:
B) 4.0
Explanation:
Jus took the test on E D G E
Answer:
b 4.0 m
Explanation:
How would a neutral and positive ball react to eachother
Answer:
They would attract one another
Explanation:
The interaction between two like-charged objects is repulsive. ... Positively charged objects and neutral objects attract each other negatively charged objects and neutral objects attract each other.
• CHALLENGE You need to move a 105-kg sofa to a different location in the room. It
takes a 403-N force to start the sofa moving. What is the coefficient of static friction
between the sofa and the carpet?
Answer:
μ = 0.391
Explanation:
The friction force is defined as the product of the coefficient of friction by the normal force. In this way, we have the following equation.
F = μ*N
Where:
F = friction force = 403 [N]
μ = static coefficient
N = Normal force [N]
And the normal force of a body lying on a horizontal surface can be calculated by means of the product of mass by gravitational acceleration.
[tex]N=m*g\\N=105[kg]\\g=9.81 [m/s^{2} ]\\N=105*9.81\\N=1030.05[N][/tex]
Now we can clear the static coefficient
[tex]403=u*1030.05\\u=0.391[/tex]
A force of 90.0 newtons is applied to a cart traveling at 15.0 meters per second. After
the force has been applied for 2.00 seconds, it comes to rest. What is the magnitude
of the impulse applied to the cart over these 2.00 seconds?
Answer:
180Ns
Explanation:
Given parameters:
Force applied = 90N
Velocity = 15m/s
Time taken = 2s
Unknown:
Impulse applied to the cart = ?
Solution:
The impulse is effect of force acting on a body through time.
It is mathematically expressed as;
Impulse = Force x time
So;
Impulse on the car = 90 x 2 = 180Ns
Emma is doing a laboratory experiment to separate components of crude oil. She decides to use a technique that will separate the components
based on their boiling points. Which technique uses this principle?
A filtration
B. distillation
OC centrifugation
OD. chromatography
E.
titration
Answer:
B. distillation
Explanation:
The technique that will separate the components of crude oil based on their boiling points is distillation.
Fractional distillation is the approach used by oil industries to separate the different components of crude oil.
The components of the crude are called fraction. Sufficient amount of heat is applied to the crude in the fractionating column. As the boiling point of each constituent is attained, they rise as vapor in the column The vapor is channeled to the cooling part where the fraction is cooled and collected.A student rides the Ferris wheel when visiting an amusement park. During the ride,
she moves at a constant speed of 3 m/s.
Which of the following statements best describes the motion of the student on the
Ferris wheel?
Answer: the velocity is not changing bc the speed is constant
Explanation:
A student rides the Ferris wheel when visiting an amusement park. She moves at a constant speed of 3 m/s which means that the velocity is not changing because the speed is constant.
What are Average Speed and Average Velocity?The overall distance the object covers in a given amount of time is its average speed. The scalar quantity represents the average speed. It does not have direction; it is represented by magnitude.
Average Speed = [tex]total\ distance/total\ time[/tex]
Average velocity is a vector quantity. The change in position or displacement divided by the periods during which the displacement happens is known as average velocity. Depending on how the displacement is displaced, the average velocity may be positive or negative. Meters per second (m/s), the SI unit of average velocity, is used.
According to the question, she is moving at a constant speed of 3 m/s means that the velocity is constant, and its acceleration will also be equal to zero because there is no change in velocity then acceleration is zero.
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What speed would a fly with a mass of 0.638 g need in order to have 74354.5 j of kinetic energy
Answer:
v = 15,267 m/s
Explanation:
Kinetic Energy
Is the type of energy of an object due to its state of motion. It's proportional to the square of the speed.
The formula to calculate the kinetic energy is:
[tex]\displaystyle K=\frac{1}{2}mv^2[/tex]
Where:
m = mass
v = speed
The kinetic energy is often expressed in Joules (J)
We are given the mass of a fly m=0.638 g and we need to calculate its speed in order to have a kinetic energy of 74354.5 J.
Converting:
m=0.638 g /1000 = 0.000638 kg
To find the speed, we solve the formula for v:
[tex]\displaystyle v=\sqrt{\frac{2K}{m}}[/tex]
[tex]\displaystyle v=\sqrt{\frac{2K}{m}}[/tex]
Substituting:
[tex]\displaystyle v=\sqrt{\frac{2*74354.5}{0.000638}}[/tex]
v = 15,267 m/s
(The fly should move faster than a rocket)
Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. What force would the fire extinguisher have to produce to propel Nikolas if he wanted to accelerate at a rate of 1.2 m/s2? Round your answer to the nearest whole newton.
Answer:
60N
Explanation:
Given parameters:
Combined mass = 50kg
Acceleration = 1.2m/s²
Unknown:
Force to propel = ?
Solution:
From Newton's second law of motion, we know that;
Force = mass x acceleration
So;
Force = 50 x 1.2 = 60N
Answer:
60N
Explanation:
A saturated solution is formed by keeping 48 gram of a salt in 200 gram of water at 35°C. calculate the solubility of the salt.
The solubility of the salt. : 24 g/100 g solvent(water)
Further explanationGiven
48 gram of a salt in 200 gram of water at 35°C
Required
The solubility of the salt.
Solution
Solubility : the amount of a substance that can be dissolved in a solvent
Can be formulated(for 100 g solution)⇒grams solute per 100 g of solvent(100 ml water)
[tex]\tt solubility=\dfrac{mass~solute}{mass~solvent}\times 100[/tex]
Input the value :
[tex]\tt solubilty=\dfrac{48~}{200~g}\times 100=24~g[/tex]
