A car starts at a position of 2 km and moves to a final position of 4 km. what is the displacement of the car

a) 0 km

b) 4 km

c) - 2 km

D) - 6 km

e) 2 km

A fireman is sliding down a fire pole. As he speeds up, he tightens his grip on the pole, thus increasing the vertical frictional force that the poleexerts on the fireman.

3. A force is exerted on a positively-charged particle that moves the particle in the direction opposite to that of an electric field.

Energy conservation is the process by which one kind of energy changes into a another and when energy is converted this way it's not lost or used up. true or false

An insulated beaker with negligible mass contains liquid water with a mass of 0.240 kg and a temperature of 75.8°C. How much ice at a temperature of - 14.1°C must be dropped into the water so that the final temperature of the system will be 27.

Which best explains why infrared waves are ineffective for treating cancer?

Whats the difference between population density and population size?

Water in the lake behind hoover dam is 221 m deep. part a what is the gauge water pressure at the base of the dam?

What is the electric force acting between two charges of 0.0042 C and -0.0050 C that are 0.0030 m apart? Use F. - k9192 and k=9.00 x 10°N VIC

At what height must a 6-kilogram object be placed to have 12 joules of gravitational potential energy? OA) 0.2 m O B) 2 m OC) 7.3 m OD) 36 m

Which is harder, air tight or water tight seals?