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A uniformly charged sphere has a potential on its surface of 450 V. At a radial distance of 9.2 m from this surface, the potential is 150 V. What is the radius of the sphere, and what is the charge of the sphere?
A sample contains 8.30×104 radioactive nuclei. In a time of 5 minutes, Evaluate the half life of the sample
A hand-driven tire pump has a 2.50 cm diameter piston and a maximum stroke of 34.0 cm. What average force do you exert on the piston, neglecting friction and gravity
The tension in the string when the ball is at the very bottom of the circle is 4.3 N. At the very bottom of the circle, a very sharp knife is suddenly inserted, to cut the string directly below point of support. How far to the right of where the s..
An 805-kg race car can drive around an unbanked turn at a maximum speed of 54 m/s without slipping. What would be the maximum speed if no downforce acted on the car
A fully charged capacitor with a voltage of 270 kV is discharged through a resistor. What is the voltage across the capacitor at the end of four time constants?
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. What is the speed through the second segment
The vibration of a diatomic molecule can be modeled as a simple harmonic oscillator. The values for the mass and force constant are 10^-26 kg and 10^3 N/m, respectively. This will work as long as the temperature is sufficiently low (assume it is in t..
Suppose for a brief moment the gas molecules hitting a wall stuck to the wall instead of bouncing off the wall. How would the pressure on the wall be affected
A person in the air above the water in a swimming pool looks straight down into the water (n = 1.33) at a diamond ring that lies on the bottom of the pool. what is the depth of the water
If the length of the field between goal lines in the Earth frame is 85.2 m, what length is measured in the rest frame of the particle
When chasing a hare along a flat stretch of ground, a greyhound leaps into the air at a speed of 14.0 m/s, at an angle of 30.0° above the horizontal. What is the range of his leap
A boat's mast is held by two cables, one attached to the front of the ship and the other to the back. What is the force acting upwards on the mast exerted by the boat at the bottom of the mast
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