A 4.00 kg stone is dropped from a height of 145 m. What is the stone's potential and kinetic energy respectively when it is 50.0 m from the ground?

A - 1,960 J, 5,680 J

B - 5,680 J, 1,960 J

C - 3,720 J, 1,950 J

D - 1,960 J, 3,720 J

Give the name and formula of the compound formed when a Mn2 + cation combines with a (PO4) 3 - anion. A. Manganese phosphate: Mn3 (PO4) 2 B. Magnesium phosphate: Mn2 (PO4) 3 C. Manganese sulfate: Mn2 (PO4) 3 D. Magnesium sulfate: Mn3 (PO4) 2 E.

The equation for distance is d = st. How far does a car go in 10 seconds at a speed of 44 m/s?

Which of the following gives the best description of the motion of electrons in a conductor? A. The electrons in conductors usually move in straight lines. B. The electrons in conductors are able to move about freely. C.

What do we call the minimum energy that is required by an electron to leave the metal target in the photoelectric effect? Select one of the options below as your answer: A. energy function B. minimum function C. work function D. quanta E.

Darren drives to school in rush hour traffic and averages 28 mph. He returns home in mid-afternoon when there is less traffic and averages 42 mph. What is the distance between his home and school if the total traveling time is 1 hr 15 min?

A vector isr⇀ = 78.0 m iˆ+278 m jˆ. What is the direction of this vector?

a paratrooper jumps out of a plane and opens her parachute shortly afterward. 10 seconds later the upward force on the parachute is 600N. The paratrooper and parachute weigh a total of 800N. What is the acceleration at this time?

When scientific work can be duplicated it is proves a hypothesis correct is reliable Does not require evaluation

A truck is traveling 70.0 kph away from you. The driver is blowing the horn, which has a frequency of 400 Hz. The air temperature is 25ÁC. What is the observed frequency of the horn?

1. The sun and other stars produce visible light by a. fluorescence. b. luminescence. c. incandescence. d. electroluminescence.