In general, the friction involved in sliding an object is ___ the friction involved in rolling an object.

less than

greater than

equal to

To lift a load of 100 kg a distance of 1 m an effort of 25 kg must be applied over an inclined plane of length 4 m. What must be done to lift the load 2 m, using the same effort? A) Use an inclined plane of length 8 m.

How long does it take the ball to reach its maximum height? answer in units of s?

Which of the following statements are true? The internal resistance of a battery decreases with decreasing temperature. A battery is a device that produces electricity by transforming chemical energy into electrical energy.

An object is dropped near the surface of a planet such that the gravitational field at the object's location is 8 Nkg.

Find the magnitude of the force needed to accelerate a 280 g mass with a⃗ = - 0.170 m/s2 i^+0.450 m/s2 j^.

what is the work done by a force equivalent to the weight of 100kg that moves an object in 7 minutes?

What does viscosity describe? Question 4 options: A. a fluid's resistance to being heated B. the rate of evaporation of a fluid C. how much energy it takes to warm a fluid D. the density of a fluid E. a fluid's resistance to flowing

What perspective of dream interpretation is being offered? A. Freudian B. activation-synthesis C. Jungian D. motivation Not D

The vapor pressure of diethyl ether (ether) is 463.57 mm Hg at 25°C. How many grams of chlorophyll, C55H72MgN4O5, a nonvolatile, nonelectrolyte (MW = 893.5 g/mol), must be added to 187.4 grams of diethyl ether to reduce the vapor pressure to 457.

You're driving down the highway late one night at 18 m/s when a deer steps onto the road 35 m in front of you. your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11 m/s