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a worker drags a 310 kg crate at a constant velocity of 3 m/s, across a factory floor by pulling on a rope tied to the crate. The worker exerts a force of 450 N on the rope, which is inclined at 38 degrees to the horizontal, and the floor has a coefficient of friction of 0.4. What is the tension in the rope? What is the acceleration of the crate?
A boat moves through the water with two forces acting on it. One is a 1500 N forward push by the water on the propeller, What is the acceleration of the 1400 kg boat
A simple Pendulum has a mass of 2.00 kg. The mass has a speed of 3.00 m/s, What is the maximum height (from the lowest position) the pendulum will reach
A magnifying glass is a single convex lens with a focal length of f = +13.0 cm.
A liquid compresses 2.0 percent when subjected to a pressure of 34 MPa. What is the bulk modulus of the liquid
A 5* 10^2 kg hot air balloon takes off from rest at the surface of the earth. The non conservative wind and lift forces take the balloon up, doing +9.70*10^4J of work on the balloon in the process. At what height above the surface of earth does th..
6.63 mol of argon gas is admitted to an evacuated 158.85 cm3 container at 48.95oC. compute the final pressure
Students hypothesized that by running the electric current through the wire of the apparatus shown here, they could cause the non-magnetic nail to exhibit magnetic properties. What would be a reasonable way to test this.
A shot-putter accelerates a 7.28 kg shot from rest to 14.8 m/s. If this motion takes 1.31 s, what average power was developed
A 5-nC charge is located at x = 5 cm and a charge of -6nC is located at x = -4 cm. Find the monopole moments
Describe in words the thermodynamics processes in terms of reversible and nonreversible for a Carnot Heat Engine, Fireplace
A spring-mass system has a natural frequency given by w=sqrt(k/m) km, Determine natural frequency, w in units of rad/sec and Hz
A car is traveling 17 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.5 m/s2. How far does the car go before it stops.
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