The emission of electrons from a metal caused by light striking metal

A) newtons 1st law of motion

B) Doppler effect

C) double slit experiment

D) photoelectric effect

After a golf ball is hit it takes off with an initial speed of 29.5 m/s and at an angle of 34.5° with respect to the horizontal. The golf field is flat and horizontal.

In an experiment, all participants receive a treatment but those in the control group recieves a false treatments

Does mass affect how long it takes an object to reach the ground from a high drop height?

He steel used to make structural beams in buildings is a mixture. What category best describes this type of mixture?

How are Earth, the Moon and Sun alligned during a neap tide?

A student places a cup of cold water on a counter in a warm room. The student measures the temperature of the water every minute until it stops changing. The water's final temperature is 28 degrees celsius. What is the final temperature of the room?

You pull a simple pendulum of length 0.225m to the side through an angle of 3.50∘ and release it. Part A How much time does it take the pendulum bob to reach its highest speed? Take free fall acceleration to be 9.80 m/s^2.

At a soccer practice, the players run sprints. They start at the goal, run 10 m toward the center of the field and then run back to the goal. Then they run 20 m toward the center of the field and back to the goal.

15. A girl pushes a box that has a mass of 85 kg up an incline. If the giri exerts a force of 200 N along the incline what is the mechanical advantage of the incline?

What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?