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1) A square plate has a side length of 1.2 m. An applied torque of 300 N•m gives the plate an angular acceleration of 4.8 rad/s2 about an axis through the centre of the plate. Determine the plate's mass.
A 0.390 kg iron horseshoe that is initially at 745 °C is dropped into a bucket containing 24 kg of water at 46 °C. What is the final equilibrium temperature? Overlook any heat transfer to or from the surroundings.
The potential difference between the surface of a 3.1 cm diameter power line and a point 1.8 m distant is 5.0 kV. What is the line charge density on the power line
Find the probability that the electron will tunnel through the barrier.
A 2.5 kg object is attached to a horizontal spring of force constant k = 4.1 kN/m. The spring is stretched 10 cm from equilibrium and released. Find the maximum acceleration
A 1830 kg car traveling at 12.9 m/s collides with a 2980 kg car that is initally at rest at a stoplight. find the coefficient of kinetic friction between the cars and the road
A high-speed photograph of a club hitting a golf ball, find the average force exerted on the ball by the club
Oppositely charged parallel plates are separated by 4.79 mm. How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.06 mm from the positiveplate
A car is safely negotiating an unbanked circular turn at a speed of 29 m/s. The road is dry, and the maximum static frictional force acts on the tires, what speed must the driver slow the car
A uniform rod of mass 3.05×10?2kg and length 0.450m rotates in a horizontal plane about a fixed axis through its center and perpendicular to the rod. What is the angular speed of the rod after the rings leave it?
A crankshaft with a diameter of 3.0 cm, rotating at 2900rpm comes to a halt in 1.20s. How many revolutions does the crankshaft make as it stops
One end of a brass bar is maintained at 305 oC, while the other end is kept at a constant, but lower, temperature. What is the temperature of the bar at a point 0.129 m from the hot end
A 0.250-kg piece of aluminum that has a temperature of -173 °C is added to 1.0 kg of water that has a temperature of 1.4 °C. determine the mass of water that has been frozen into ice
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