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Q1. A horizontal force of 10 N is applied to the outer edge of a door at an angle of 32° to the door. The width of the door is 0.80 m. The magnitude of the torque of this force on the door with respect to the hinge is most nearly?
Q2. A streetcar named Desire travels between two stations 0.60 km apart. Leaving the first station, it accelerates for 10.0 s at 1.0 m/s2 and then travels at a constant speed until it is near the second station, as it brakes at 2.0 m/s2 in order to stop at the station. How long did this trip take?
Q3. A rocket is launched at an angle of 54° above the horizontal with an initial speed of 96 m/s. It moves for 3 s along its initial line of motion with an acceleration of 30 m/s2. At this time its engines fail and the rocket proceeds to move as a free body. What are the rocket's horizontal range, greatest height, and total time of flight?
explain the shape of the distribution of sample means.
find the childs speed at the lowest point.An elevator has mass 610 kg, not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 17.0 s and it is driven by a motor that can provi..
What least amount heat is needed to bring 20-g of water at 20C to the boiling point and completely boil it away.
A 4.70 kg mass causes a vertical spring to stretch 0.850 meters. The spring is after that stretch and extra 0.270 meters and release (as a stopwatch starts) causing the spring and mass to oscillate.
The electric field within the membrane separating the inside and outside of a biological cell is approximately 7.7MV/m, what is the potential difference across the membrane
An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though..
A 1.50e-14 kg oil drop accelerates downwards at a rate of 1.80 m/s^2 when placed between two horizontal plates that are 9.40 cm apart. Determine the magnitude of the charge on the oil drop
A hot-air balloon is ascending at the rate of 14 m/s and is 98 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
Particle A and particle B are held together with a compressed spring between them. When they are free, the spring pushes them apart and they after that fly off in opposite directions, free of the spring.
A viewing window on the side of a large tank at a public aquarium measures 42 in. by 52 in. What is the total outward force on the window
The vertical displacement of particles in a string (when a wave is propagating through it) is given by y = (0.02) sin[(10?)t - (8?)x], where everything is measured in standard units, meters and seconds. What is the amplitude of the wave?
Consider a series RLC circuit with R = 28 , L = 6.0 mH, and C = 31 µF. The circuit is connected to a 10 V (rms), 600 Hz AC source. Find the average power delivered to the circuit
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