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A 410 mL spherical flask contains 0.075 mol of an ideal gas at a temperature of 335 K. What is the average force exerted on the walls of the flask by a single molecule?

how do you find the average...

During a workout, a person repeatedly lifts a 12 lb barbell through a distance of 1.5 ft. How many "reps" of this lift are required to burn off 105 Cal?

I know you use the equation, Q=mgh
m=5.448...

A 10 kg crate is sliding at a constant speed of 7 m/s along a frictionless horizontal table, when it encounters a friction patch (s=0.8, k=0.2).

Find the work done by friction force acting on the...

A traffic light of mass m (= 18 kg) hangs above the street by two wires, both of which make an angle (= 65 deg) with the vertical.

1. How much is the tension in each wire?
2. Find the tension...

A crate of mass m (=10 kg) is placed at rest on a (frictionless) inclined plane, which has an angle (= 30 deg ) above horizontal

1. The force of gravity on the crate is?
2. The normal force on...

While waiting at the airport for your flight to leave, you observe some of the jets as they take off. With your watch you find that it takes about 34.9 seconds for a plane to go from rest to takeoff...

Suppose the tower height is h = 9.60 m, and that the bulls-eye's horizontal distance is d = 4.0 m from the launch point. If the pumpkin is thrown horizontally, what is the launch speed needed to hit...

An astronaut on the planet Zircon tosses a rock horizontally with a speed of 7.85 m/s. The rock falls through a vertical distance of 1.40 m and lands a horizontal distance of 9.65 m from the...

A cork shoots out of a champagne bottle at an angle of 36.0° above the horizontal. If the cork travels a horizontal distance of 1.30 m in 1.45 s, what was its initial speed?

A cannonball is fired out of a cannon at 110 m/s at 30 degrees above horizontal, on level ground.

a.) How long will the cannonball be in the air?

b.) What is the maximum height above the...

A ball is thrown off a 28 m high cliff at 3 m/s, 50 degrees above the horizontal(Xaxis). How long does it take to hit the ground?

A hot air balloon is rising upward with a constant speed of 15 m/s. When the balloon is 4 m above the ground, the balloonist accidentally drops a compass over the side. What is the speed before it...

How do you find the maximum height of a diver who jumps up of a diving board, with the initial speed of 8m/s. The diving board is already 5m high from the water. And the total time the diver is...