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A 1000 kg car is traveling at a constant speed of 30 m/s
a. How much energy is transferred to internal energy as the car comes to rest?
b. If the car stops in 100 meters, what is the average force applied to the car?
Suppose a lake has a layer of ice 11 cm thick on its surface. The top of the ice layer is cooled by the atmosphere to -5.25° C. At what rate is heat transferred through a 1.5 cm2 area of the ice
A microscope has a 16.8 cm tube length, a 0.64 cm focal length of the objective lens, calculate the microscope's magnification
A uniformly charged conducting sphere of 1.4 m diameter has a surface charge density of 11 µC/m2, Find the net charge in coulombs on the sphere
The third-order fringe of 650 nm light is observed at an angle of 17° when the light falls on two narrow slits. How far apart are the slits
The base of an aluminum block, which is fixed in place, measures 90 cm by 90 cm. The shear modulus of aluminum is
How much work is done by the motor when the motor when the position of the arm is moved from x=0.150m to x=0.750m? what is the power of the motor in watts
Two small plastic spheres are given positive electrical charges. When they are 15 cm apart, the repulsive force between them has magnitude of 0.220N. what is the charge on each sphere
Each plate of a parallel-plate capacitor is a square of side 0.0339 m and the plates are separated by 0.407 × 10-3 m. Find the electric field strength inside the capacitor
A bullet is fired through a board 7.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board, Find the total time the bullet is in contact with the board
An air parcel occupied by an ideal gas (T1 = 255 K, V1 = 1500m3, m1 = 1680 kg) collides and mixes with a second air parcel occupied by a second ideal gas (T2 = 280 K, V2 = 1200 m3, m2 = 1392 kg). Assuming the specific heat capacities of the gases in ..
A long solenoid of length L, cross-sectional area A, having N1 turns, has wound about its centre a small coil of N2 turns. Calculate the mutual inductance if L=1 m, A=10 cm2, N1=1000, N2=20.
A startled armadillo leaps upward, rising 0.575 m in the first 0.195 s. What is its initial speed as it leaves the ground
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