Does a star's apparent brightness depend only on its distance from earth?

True or false Destructive interference takes place when the crest of one wave balances out or cancels out the trough of an interfering wave.

You rub A plastic comb with wool. why will the comb then attract small bits of paper?

Which of the following refers to an attractive force between two objects due to their mass

Suppose that an object's acceleration functions is given by a=8t+5. the objects initial velocity 4, and the initial position is 12. find the object's displacement as a function of time.

A box is pulled up a rough ramp that makes an angle of 22 degrees with the horizontal surface. The surface of the ramp is the x-plane, What is the magnitude of the force of tensionit te ne force in the direction of 98 N2 57N 139 N 178N 183N F =

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 newtons?

If you could see the electric field coming off a proton you would notice that electric field lines are

We wrap a light, nonstretching cable around a 10.0 kg kg solid cylinder with diameter of 38.0 cm cm. The cylinder rotates with negligible friction about a stationary horizontal axis. We tie the free end of the cable to a 14.

A 0.5kg baseball experiences a 10N force for a duration of 0.1s. What is the change in velocity of the baseball

A beam of light passes from air into a cube of zirconium if the angle of incidence is 40"what is the angle of refraction?