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The total translational kinetic energy of the molecules of a sample of gas at 435 K is 1.99 × 104 J. How many moles does the sample comprise? Find the average translational kinetic energy of a single molecule.
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min . It then reverses and goes at 80 km/h for 20min . What is the average velocity for the entire trip? What is the average speed for the entire trip?
Two runners of mass 70kg and 60kg, respectively, have a total linear momentum of 350 kg•m/s. The heavier runner is running at 2.0 m/s. Determine the likely speeds of the lighter runner.
A 5.0-kg object is pulled along a horizontal surface at by a 15 N force acting 20? above the horizontal. How much work is done by the gravitational force
A 5 ohms resistor is in SERIES with a 25 ohms resistor, and the combination is connected to a 10V battery. What is the equivalent resistance of the series combination
A car travels due east with a speed of 42.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain with respect to the following reference frames
An object is thrown straight upwards with a speed of 40.8 m/s from the top of a 59.2 m tall building. What is the maximum height (from the ground) that the object reaches
q1. a 0.070 kg arrow hits a target at 21.10 ms and penetrates 4.90 cm before stopping. what average force did the
When a test charge q0 = 6 nC is placed at the origin, it experiences a force of 8 ? 10-4 N in the positive y direction. What is the electric field at the origin
a hollow sphere has a mass of 15kg, an inner radius of 12cm and an outer radius of 18cm. What is the rotational inertia of the sphere
A capacitor should have charge of magnitude 4.5 microC on each plate, and an electric field of 2.0 kV/mm between the plates
A 3.00kg mass is pushed against a horizontal spring of force constant 23.0N/cm on a frictionless air table. What is the greatest acceleration of the mass
A glass rod rubbed with silk acquires a charge of +1.1×10?9 . Is the charge on the silk positive, zero, or negative, How much mass has the glass rod gained or lost
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