You need to figure out how high it is from the 3rd floor of keck science building to the ground. you know that the distance from the ground to the 2nd floor is 5m. your friend drops a ball from rest from the 3 rd floor and you start to time the ball when it passes by you at the 2nd floor. you stop the timer when the ball hits the ground. the time recorded is 0.58 seconds.

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90