Why is it not advisable to use small value of incident angle to carry out experiment

The planet XYZ traveling about the star ABC in a circular orbit takes 24 hours to make an orbit. Assume that the orbit is a circle with radius 89 comma 000 comma 00089,000,000 mi. Find the linear speed of XYZ in miles per hour.

A hypothetical planet has a radius 1.7 times that of earth, but has the same mass. what is the acceleration due to gravity near its surface?

Suppose that air resistance cannot be ignored. For the position at which the person has jumped from the platform and the cord reaches its maximum stretch length, how does the stretch length of the cord in the case with air resistance compare with

A 0.4-kg toy train car moving forward at 3 m/s collides with and sticks to a 0.8-kg toy car that is traveling in the opposite direction at - 2 m/s. What is the size and direction of the final velocity of the two cars

If it took 10sec to climb the ladder what was your power in watts nd kilowatt?

How to find final velocity given mass and initial velocity only?

What charge do electrons have? Negative Positive Neutral

What do you suppose would cause an atom to lose an electron?

Calculate the average speed of spacecraft orbiting mars

Two small spheres spaced 20.0 cm apart have equal charge. how many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 * 10-21 n?