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A 3800kg truck is parked on a 12 degree slope. How big is the friction force on the truck? The coefficient of static friction between the tires and the road is 0.90.
Calculate the pressure variation corresponding to a sound insensity of 10-16 W/cm2
An airplane of wing span 40.0 m flying horizontally at a speed of 774 km/h due north in a region where the vertical component of the earth's magnetic field is 4.75 *10^-5 T. Find the emf induced across its wing
Two electrons are fixed 2.1 cm apart. Another electron is shot from infinity and comes to rest midway between the two. What was its initial speed
The attractive electrostatic force between the point charges 7.35x10^-6C and Q has a magnitude of 0.400N when the separation between the charges is 2.92m. Find the sign and magnitude of the charge Q.
Consider an infinite solenoid of radius R, n turns per unit length, and current I. Calculate the final cinetic moment of each of the cylinders
A flexible chain weighing 37.0 N hangs between two hooks located at the same height. Find the magnitude of the force each hook exerts on the chain
A 120-V motor has mechanical power output of 2.50 hp. It is 90.0% efficient in converting power that it takes in by electrical transmission into mechanical power, Find the current in the motor
A cube of ice is taken from the freezer at -9.5?Cand placed in a 95-g aluminum calorimeter filled with 310g of water at room temperature of20.0 ?C. What was the mass of the ice cube
Assume that the cell is floating on the surface of water, and that the water surface has a coefficient of friction of u=0.300. You now want to use a laser to move cell horizontally, along the surface of the water.
A 2.62-g bullet, traveling at a speed of 417 m/s, strikes the wooden block of a ballistic pendulum, How high does the combination rise above its initial position
the motor slows from 80 rad/s to 40rad/s while the turning the drum through an angle of 120 radians. Illustrate what is the magnitude of the angular acceleration of the motor?
The rotor in a certain electric motor is a flat, rectangular coil with 82 turns of wire and dimensions 2.25 cm by 3.88 cm. The rotor rotates in a uniform magnetic field of 0.800 T. Find the maximum torque acting on the rotor
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