Find the weight of a 15kg rock acceleration due to gravity is 9.8 m/s2

A. 5.2 N

B. 15 N

C. 147 N

D. 1.53 N

Two cars are approaching each other. One is travelling at 30mph whilst the other is travelling at 50mph. What is their relative speed?

Desertification is a process whereby land degradation in arid, semi-arid, and dry sub humid areas results from climatic variations and human activites. A. True B. False

The speed of a 180-g toy car at the bottom of a vertical circular portion of track is 7.75 m/s. If the radius of curvature of this portion of the track is 57.5 cm, what are the magnitude and direction of the force the track exerts on the car

A charge Q is distributed uniformly along the x axis from x1 to x2. What would be the magnitude of the electric field at x0 on the x-axis? Assume that ke = 1 4 π ǫ0 and x0 > x2 > x1 for a Coulomb constant of 8.98755 * 109 N · m2 / C 2

How would water be different if it wasnt a polar molecule?

What is the difference between diffusion and osmosis?

Suggest and explain two ways to reduce heat loss through the doors of the house.

If the length of the ramp is 2m and the height of the ramp is 1m, what is the mechanical advantage?

Which units are used to measure both velocity and speed? Select three options. m/s d/t km/h mph Iph

What will one see during an annular eclipse?