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An empty capacitor is connected to a 24.0 V battery andcharged up. The capacitor is then disconnected from the battery,and a slab of dielectric material (κ = 3.5) isinserted between the plates. Find the amount by which the potential difference across the plates changes. Specify whether the change isan increase or a decrease. The voltage will decrease by? V
A ball is thrown horizontally from a 12 m high building with a speed of 8.0 m/s. How far from the base of the building does the ball hit the ground
An electron moving parallel to the x axis has an initial speed of 3.70x10^6 m/s at the origin. Calculate the potential difference between the origin and that point.
A uniform steel beam has a mass of 720kg On it is resting half of an identical beam, What is the vertical support force at each end
A diathermy machine, used in physiotherapy, generates electromagnetic radiation that gives the effect of "deep heat" when absorbed in tissue. What is the wavelength of this radiation
The calorimeter is constructed of a material that has a specific heat of 0.10 cal/ g. ^{circ}C. When equilibrium is reached, what will be the final temperature.
A 61kg skydiver can be modeled as a rectangular "box" with dimensions 21cm x 37cm x 1.8m. What is his terminal speed if he falls feet first
You are in a hot air balloon (yes, another balloon problem!) rising from the ground at a constant velocity of 2.70 m/s upward. How long does the cork remain in the air
Two ice skaters face each other, one is 100 kg and the other is 50 kg. They push against each other's palms and move apart. What is the speed of the lighter skater
A stunt man whose mass is 70 kg swings from the end of a 3.10 m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal; find the tensions in the rope that are necessary to make him follow his circ..
A model of the stretching vibrations of a polyethylene chain may be made by considering a linear chain of identical masses M connected by springs of alternating force constants C1 and C2.
A pilot takes off from a city in Northern California and aims her airplane due North toward Seattle with a speed 240 km/h relative to the air. What is the magnitude of the airplane's velocity relative to the Earth
A rotating water pump works by taking water in at one side of the rotating wheel, and expelling it from the other side. If a pump with a radius of 0.120m starts from rest and accelerates at 30.50 rad/s2.
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