PHYSICS HIGH SCHOOL

Which of the following statements is a consequence of the equation, E = mc2A
energy is released when matter is destroyed
B
mass and energy are equivalent
C
the law of conservation of energy must be modified to state that mass and energy are conserved in any process
D
all of the choices

Answers

Answer 1
Answer: This is D.
A - technically the matter is converted but yes E is released
B - Mass and energy are different forms of each other
C - They can now combine to form the conservation of mass AND energy

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What would you expect to happen to the acceleration if all friction were removed from the ramp, making the net force even higher than 600 N?

Answers

Answer:

if the friction was removed from the ramp, the acceleration would drasticly increase, making it hard to stop.

Explanation:

sticking your fingers into a wall socket will not bring you into direct contact with an electrical current. true or false

Answers

Answer:

False

Explanation: Sticking fingers into a wall socket will bring us into direct contact with an electrical current because human body is a conductor of electricity. Effect of electric current is visible when circuit of flow is complete. In this case when we touch live wire or socket human body complete its circuit and get an electric shock. Sometimes this can be avoided by wearing footwear made up of insulator.
the correct answer is false cause how can u fit your finger in a wall something it's to small

When Jane drives to work, she always places her purse on the passenger’s seat. By the time she gets to work, her purse has fallen on the floor in front of the passenger seat. One day, she asks you to explain why this happens in terms of physics. What do you say?

Answers

Explanation: There may be different explanations:

Suppose that Jane's car has a built some sped, and she sees a stoplight. Now she needs to stop the car (decelerating the car)

When she does this, she creates a force that holds the car until it is full stop, but this force is applied only on the car, the purse that is on the passenger seat only feels this force by the friction that the seat does in his surface, but the purse has built some moment because it was inside the car, and the friction force that the seat does may not be enough to also stop the purse. So when Jane stops, the purse keeps moving forward, and then it falls down of the seat.
At some time during her drive she backed up with a substantial negative. ( backwards) acceleration. Since the pocket book is not physically connected to the seat it is free to move. Upon rapid negative acceleration the pocket book remains in its position while the car accelerates backwards away from it. this demonstrates Newtons 1st law of motion. The first law is the law of inertia. Which states, an object at rest. ( pocketbook) will remain at rest and an object in motion will continue in motion at constant velocity, unless acted upon by some outside force to change its motion.

Why do objects move at constant speed

Answers

Most objects move at a constant speed because of friction and acceleration. The constant speed keeps them in place, and keeps a balance. 

boyle converted his observation into a mathematical formula. which equation best represents the relationship between the pressure (p) and the volume (v) of the gas before and after compression?

Answers