What is the centripetal acceleration of the hammer
An athlete whirls a(n) 7.16 kg hammer tied to the end of a(n) 1.2 m chain in a horizontal circle. The hammer moves at the rate of 1.47 rev/s..(a) What is the centripetal acceleration of the hammer?(b) What is the tension in the chain?
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If the astronaut throws the tool with a force of 16.0 rm N, what is the magnitude of the acceleration a of the astronaut during the throw? Assume that the total mass of the astronaut after she throws the tool is 80.0 rm kg.
Under these simplified conditions, what value must the safety factors exceed to prevent pancake collapse of the building?
Why is such a power supply with a large internal resistance safer than one with the same voltage, but lower internal resistance?
A 220 g block on a 60cm -long string swings in a circle on a horizontal, frictionless table at 55 rpm. What is the speed of the block?
Consider an element of air in the standard atmosphere at a standard altitude of 1000 m. Assume that you somehow raise this element of air isentropically to a standard altitude of 2000 m, where the element now takes on the standard pressure at 2000
An old riddle asks, "which has more mass, a kilogram of feathers or a kilogram of iron? The answer is that they have the same mass. Based on your knowledge of density, which would take up more space, a kilogram of feathers or a kilogram of iron?
Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is the final velocity of the car?
A rectangular loop has 85 turns with an area of 0.225 m2 and lies in a uniform magnetic field of 0.28 T. Several Physics lab students have reported that the maximum torque exerted on this loop is 1.2 × 10-2 Nm. What is the current in the coi
Sally travels by car from one city to another. She drives for 29.0 min at 64.0 km/h, 37.0 min at 42.0 km/h, and 23.0 min at 30.0 km/h, and she spends 13.0 min eating lunch and buying gas. a) Determine the average speed for the trip.
Romeo (76.0 kg) entertains Juliet (56.0 kg) by playing his guitar from the rear of their boat at rest in still water, 2.80 m away from Juliet, who is in the front of the boat. After the serenade, Juliet carefully moves to the rear of the boat (awa
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