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Q. A metal container, which has a mass of 9.4 kg contains 18.0 kg of water. A 1.8-kg piece of the same metal, initially at a temperature of 200.0°C, is dropped into the water. The container and the water initially have a temperature of 14.1°C and the final temperature of the entire system is 16.1°C. Calculate the specific heat of the metal.
Q. At each point on the surface of the cube, the electric field is parallel to the z axis. The length of each edge of the cube is 3.0 m. On the top face of the cube E = -40 k N/C, and on the bottom face of the cube E = +25 k N/C. Determine the net charge contained within the cube.
A cockroach of mass m lies on the rim of a uniform disk of mass 7.00 m that can rotate freely about its center like the merry-go-round. At first the cockroach and disk rotate together with an angular velocity of 0.220 rad/s. Then the cockroach walks ..
What is an average acceleration of the dragonfly
A contact lens is made of plastic with an index of refraction of 1.36. The lens has an outer radius of curvature of +1.91 cm and an inner radius of curvature of +2.41 cm. What is the focal length of lens?
What is the angular velocity in rad/s . What is the least pressure obtained inside the bottle? What will happen when this pressure is reached.
Compute the mass of a ball and speed of a puck after collision.
A 61.0 kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12.0 m .If the skier's speed at point A is 7.50 m/s (before entering dip), what is the normal force exerted by the snow on the skie..
A pair of speakers separated by 0.700m is driven by the same oscillator at a frequency of 662Hz. An observer, originally positioned at one of the speakers, begins to walk along a line perpendicular to line joining the speakers. (Assume the speed o..
Calculate the total amount of energy that flows into the space between the capacitor plates from to , by first integrating the Pointing vector over the surface that connects the edges of the two circular plates, and then integrating over time.
You're in an airplane that flies horizontally with speed 1000 km/h (280m/s) when an engine falls off. Neglect air resistance suppose it takes 30s for the engine to hit the ground.
What is an angular acceleration
A bumper car with mass m1 = 129 kg is moving to the right with a velocity of v1 = 4.50 m/s. A second bumper car with mass m2 = 86.0 kg is moving to the left with a velocity of v2 = -3.6 m/s. The two cars have an elastic collision. Suppose the surface..
Find the boundary layer thickness and drag on a given plate if Water at 15°C flows over a plate 2m long and 25cm wide at a velocity of 5 m/s along its length.
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