PHYSICS HIGH SCHOOL

What is another unit for momentum besides kg-m/s?
a. N
b. N-s
c. N-s2
d. N/s

Answers

Answer 1
Answer: 'Newton-second' is dimensionally equivalent to 'kilogram-meter/second'.

Related Questions

What is latent heat of fusion ...
This is Psychology. Define each of the following: Consensus, consistency, distinctiveness.
Which photon has the lowest energy? 1. Infrared 2. Ultraviolet 3. X-ray 4. Red visible light 5. Yellow visible light 6. Microwave
A car traveling at 37 m/s starts to decelerate steadily. It comes to a complete stop in 6 seconds.what is its acceleration? m/s
A soccer player kicks a ball with a speed of 30 m/s at an angle of 10. How long does the ball stay in the air?

State the principle of transmission of pressure in liquids

Answers

Answer:

Pascal's law or the Principle of transmission of fluid-pressure states that "pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions throughout the fluid such that the pressure ratio (initial difference) remains the same."

Explanation:

Which of these is equivalent to the law of conservation of energy?A. The total mechanical energy is always conserved.
B. Friction is a nonconservative force.
C. Kinetic energy can be transformed into thermal energy.
D. The total energy of all types remains the same in a closed system.

Answers

The Law of the Conservation of Energy is stating that the total mechanical energy is always conserved or in simpler terms, not used or saved.

Answer: The correct option A.

Explanation:

  • Law of conservation of energy states that energy can neither be created nor be destroyed. But it can be transformed from one form to another.
  • Law of conservation of Mechanical energy  states that mechanical energy of the closed system remain constant until dissipative forces are absent. This means that potential energy gets converted in kinetic energy or vice versa.

Mechanical energy is defined as the sum of the both potential and kinetic energies.

M.E = P.E + K.E

So, from the given options the correct answer is option A.

An object has a mass of 20,000kg and a density of 4000kg/m? What is its
volume?​

Answers

The answer is 20000kg

If the velocity of an object is changing, its momentum is also changing. true or false 

Answers

It is absolutely true that when the velocity of an object changes, the momentum of the object also change. Momentum of any object is defined as the multiple of velocity of an object and the mass of the object. So we can easily deduce that momentum is directly proportional to velocity of an object if the mass of the object remains constant. So it can be seen that if the mass of the object does not change then any change in velocity is bound to have an effect on the momentum of the object. We can easily write the equation as momentum= mass x velocity.


What body systems are involved in excretion of wastes? A) integumentary, muscular, nervous, digestive B) respiratory, circulatory, digestive, muscular C) digestive, muscular, nervous, endocrine, respiratory D) integumentary, digestive, respiratory, urinary, circulatory

Answers

Answer:

The correct option is D

Explanation:

Integumentary system consists of organs including the skin which is used in the excretion of sweat.

Digestive system consists of organs including the tongue, pancrease, gallbladder and liver. The liver for example regulates toxic substances in the body and excretes a substance known as bile.

Respiratory system consists of organs including the lungs which is used to breathe in oxygen and breathe out carbon dioxide.

Urinary system consists of the kidneys, urethra, bladder and ureters; they are involved in the excretion of urine.

Circulatory system consists of the blood, the blood vessels and heart. The circulatory system also assists in the removal of carbon dioxide from the body.

Answer: D

Explanation:

Whatare two diffent units that represent work

Answers

W=Pt
This means:
Work in Joules (J) = Power in Watts (W) × Time in Seconds (s)

W=Fd
This means:
Work in Joules (J) = Force in Newtons (N) × Distance in Meters (m)
two units for work :
   ~ first is Joule which is equal to Newton .meter ..
  ~ second is kilogram .meter square per second square i.e kgm²/s²
the second unit is derived from the first unit  Newton .meter 
Newton = kgm/s² and then multiply m .. it will be equal to kgm²/s²..
Other Questions
Which is an example of the kinetic-molecular theory not holding true for a gas?The average kinetic energy of particles depends only on the temperature. The particles in a gas travel in straight lines in a continuous, random motion. The attraction between particles causes a gas to condense at low temperatures. The particles in a gas make up a small portion of the total volume of the gas.
A train deports from a station at a constant acceleration of 5 m/s what is the speed of the train at the end of 20 seconds ?
A speeding car collides with an unlucky bug flying across the road Which explains why the impact doesn't equally damage the car and the bug A. The car has more momentumB.the bug is traveling fasterC. The bug has more momentumD. The net force is zero
Which one of the following choices best represents an advantage of cardiorespiratory fitness?A. Decrease in oxygen intake B. Decrease in bone mass C. Decrease in fat stores D. Decrease in muscle mass