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A pail of water is rotated in a vertical circle of radius 1.45 m. What is the minimum speed of the pail at the top of the circle if no water is to spill out?
The ball is pulled to one side and released to swing as a pendulum, reaching a speed of 5.8 m/s as it passes through the lowest point. Illustrate what is the tension in the rope at that point?
A coil with an inductance of 1.8 H and a resistance of 6.7 ? is suddenly connected to a resistanceless battery with an ? = 80.0 V. What is the rate at which thermal energy is appearing
A car that weighs 13800.0 N is initially moving at a speed of 42.0 km/hr when the brakes are applied and the car is brought to a stop in 2.4 s. Find the magnitude of the force that stops the car
Three resistors with values 1.0 , 2.2 , and 5.5 , respectively, are connected in parallel in a circuit with a 5.0 V battery. What is the total equivalent resistance
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s.What is the frequency heard by the observer . What must be the result have been for the horizontal speed.
A nanowire is a (nearly) one-dimensional structure with a diameter on the order of a few nanometers. What is the tension in the middle
what is the magnetic field between the rails. A lead ball is dropped into a lake from a diving board 6 above the water. After entering the water, it sinks to bottom with a constant velocity equal to the velocity with which it hit the water. The bal..
Gas in a container is at a pressure of 1.1 atm and a volume of 6.0 m3. What is the work done on the gas if it expands at constant pressure to twice its initial volume
A device used in radiation therapy for cancer contains 6.30×10-1 g of cobalt 2760Co (59.9333819 u). Determine the activity of the radioactive material
A blue ball is thrown upward with an initial speed of 24.3 m/s, from a height of 1 meters above the ground. What is the speed of the blue ball when it reaches its maximum height
An airplane with a speed of 69.8 m/s is climbing upward at an angle of 40° with respect to the horizontal. Calculate the distance along the ground, measured from a point directly beneath the point of release
Starting from rest, a 98-kg firefighter slides down a fire pole. How far did he slide down the pole
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