Questions from Modern Physics

Q: How many correct experiments do we need to disprove a theory?

How many correct experiments do we need to disprove a theory? How many do we need to prove a theory? Explain.

Q: Can you have zero acceleration and nonzero velocity? Use a vx

Can you have zero acceleration and nonzero velocity? Use a vxt graph to explain.

Q: During a storm, a car traveling on a level horizontal road

During a storm, a car traveling on a level horizontal road comes upon a bridge that has washed out. The driver must get to the other side, so he decides to try leaping the river with his car. The side...

Q: The froghopper, Philaenus spumarius, holds the world record for insect

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0° above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm...

Q: Inside a starship at rest on the earth, a ball rolls

Inside a starship at rest on the earth, a ball rolls off the top of a horizontal table and lands a distance D from the foot of the table. This starship now lands on the unexplored Planet X. The comman...

Q: On level ground a shell is fired with an initial velocity of

On level ground a shell is fired with an initial velocity of 40.0 m>s at 60.0° above the horizontal and feels no appreciable air resistance. (a) Find the horizontal and vertical components of the shel...

Q: A major leaguer hits a baseball so that it leaves the bat

A major leaguer hits a baseball so that it leaves the bat at a speed of 30.0 m/s and at an angle of 36.9° above the horizontal. Ignore air resistance. (a) At what two times is the baseball at a height...

Q: A shot putter releases the shot some distance above the level ground

A shot putter releases the shot some distance above the level ground with a velocity of 12.0 m/s, 51.0° above the horizontal. The shot hits the ground 2.08 s later. Ignore air resistance. (a) What are...

Q: In a carnival booth, you can win a stuffed giraffe if

In a carnival booth, you can win a stuffed giraffe if you toss a quarter into a small dish. The dish is on a shelf above the point where the quarter leaves your hand and is a horizontal distance of 2....

Q: A rhinoceros is at the origin of coordinates at time t1 =

A rhinoceros is at the origin of coordinates at time t1 = 0. For the time interval from t1 = 0 to t2 = 12.0 s, the rhino’s average velocity has x-component -3.8 m/s and y-component 4.9 m/s. At time t2...