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An airplane has a mass of 27,000 kg and takes off under the influence of a constant net force of 42,500 N. What is the net force that acts on the plane's 74 kg pilot?
An object with mass m1 = 2 kg traveling east at v1i = 2.8 m/s strikes an object with mass m2 = 3 kg traveling at v2i = 2 m/s in a direction q = 118° counterclockwise from the east. After the collision, the first object rebounds at v1f = 2.8 m/s in..
A 2.0 hp electric motor on a water well pumps water from 10 m below the surface. How many liters of water does the motor pump in 1 hr
One mole of a monatomic ideal gas has an initial pressure, volume, and temperature of Po, Vo, and 335 K, respectively. Find the total heat (including the algebraic sign) for this three-step process
A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. how much does the point move down
Assume that the earth is a uniform density spherical mass. (This assumption is not correct but we will use it for simplicity in working the problem.)
A 1.6mH inductor is connected in parallel with a variable capacitor. The capacitor can be varied from 100 pF to 200 pF. find the maximum oscillation frequency for this circuit
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. how far (in kilometers) are you from the base of the arch
A small ball rolls horizontally off the edge of a tabletop of height h, How long is the ball in the air and What is its speed at the instant it leaves the table
A ball of mass 1.020 g and positive charge q =45.2 microC is suspended on a string of negligible mass in a uniform electric field. We view that the ball hangs at an angle of theta=15.0 from the vertical. What is the magnitude of the electric field.
A child suddenly runs into the street. If it takes the driver 0.80 s to react and apply the brakes, explain how many meters will the car have moved before it begins to slow down?
An indoor swimming pool of depth 2m transfers heat at a rate of 100w/m2 to the 10m of air between the pool and the roof for 1000s. What is the temperature change of the air
A 91.0-kg bungee jumper steps off a bridge with a light bungee cord tied to her and to the bridge. The unstretched length of the cord is 15.0 m. What time interval is required for the cord to stretch by 26.0 m
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