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Two charged concentric spheres have radii of 9.6 and 15.1 cm. The charge on the inner sphere is 4.09 multiplied by 10-8 C and that on the outer sphere is 2.10 multiplied by 10-8 C.
(a) Find the electric field at r = 12.4 cm.(b) Find the electric field at r = 19.9 cm.
High speed stroboscopic photographs show that the head of a 198 g golf club is traveling at 56.6 m/s just before it strikes a 45.0 g golf ball at rest on a tee. Find the speed of the golf ball just after impact
An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum..
A piece of copper at 320 degrees Celsius is dropped into 1.4 kg of water at 17 degrees Celsius. If the equilibrium temperature is degrees Celsius , what is the mass of the copper
a turbine accepts steam at 2.0 mpa and 627 degrees c and discharge at 20 kpa. every second 4 kg of superheated steam
An artificial lens is implanted in a person's eye to replace a diseased lens. The distance between the artificial lens and the retina is 2.82 cm. What is the power of the implanted lens
A skydiver with his parachute has a combined mass of 79 kg and an approximate frontal area of 0.71 m^2. Calculate the terminal velocity of this skydiver in a horizontal position
A long, straight wire lies in the plane of a circular coil with a radius of 0.040 m. The wire carries a current of 5.0 A and is placed along a diameter of the coil. What is the net flux through the coil
A spaceship is launched from the Earth's surface with a speed v. The radius of the Earth is R. What will its speed be when it is very far from the Earth
A 6.5- kg block oscillates with an amplitude of 0.100 m on a light spring of constant k = 16.0 N/m. What is the maximum value of the block's velocity
a neon sign that requires a voltage of 12000 v is plugged into a 120 v wall outlet. what ratio of turns
on your first trip to planet x you happen to take along a 200 g mass a 40.0 cm long spring a meter stick and a
In a head-on collision, a car stops in 0.12s from a speed of 19m/s. What force is applied to the driver by his seat belt
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