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A 150kg block is initially moving at a speed of 15 m/s. Suddenly a net force of 450N is applied to the block and causes it to accelerate. If the force persists for a total of 25s, what is the speed of the block at the end of the 25s? The distance moved in 25s period?
A block of mass m = 2.8 kg is dropped from height h = 94 cm onto a spring of spring constant k = 1590 N/m (Fig. 8-38). Discover the maximum distance the spring is compressed.
A vertical, circular cross-sectional jet of air strikes a conical deflector as indicated in Fig. P5.55. A vertical anchoring force of 0.1 N is required to hold the deflector in place. Determine the mass (kg) of the deflector. The magnitude of velo..
A rectangular block of copper has sides of length 12 cm, 22 cm, and45 cm. what are the currents thatthe block can carry
A hydrogen molecule consists of two hydrogen atoms whose totalmass is 5.3 * 10 -26 kg, find the effective distance between the atoms
a circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 t. the current in the loop is 2.0 a.
Find the energy contained in a 2.90 x 10-5 F parallel-plate capacitor if it holds 1.75 x 10-3 C of charge. What new voltage will result in a doubling of the stored energy
a car accelerates along a straight road from rest to 90km/h in 5 seconds, what is the magnitude of its average acceleration
A 210-kg crate is being pushed across a horizontal floor by aforce P that makes an angle of 18.6° below the horizontal. The coefficient of kinetic friction is0.209. What should be the magnitude of P, so that the net work done by it and the kinetic..
Experiments have shown that thought processes in the mind can be affected if the parietal lobe is exposed to a magnetic field with strength of 1.0 T. Compute how much current must a long
You connect five identical resistors in series to a battery whose EMF is 12.0 V and whose internal resistance is negligible. What are the resistance of each resistor and the potential difference across each resistor
Three kilograms of hydrogen contained in a nondeforming sealed vessel are cooled from 400 °C, 400 kPa(abs) until the hydrogen pressure is 100 kPa(abs). Calculate the change in internal energy, enthalpy, and entropy associated with this cooling pro..
A block with mass .382kg is attached to a horizontal spring with spring constant k=1.28 N/m on a frictionless surface. What is the amplitude of the block's motion
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