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A 15.0 kg object is moving with velocity of 17.5 m/s2. A force of -50 N acts on the object and its velocity becomes 3.20 m/s2. What is the displacement of the object while the force acts?
The force of the wind on the sails of a sailboat is 370 N north. The water exerts a force of 170 N east. If the boat (including crew) has a mass of 320 kg, what are the magnitude and direction of it
A river has a current with a velocity of 1.5 m/s due east. A boat whose speed in still water is 5 m/s directed north a cross a 100 m wide river. with what speed will the boat cross the river?
How close to the goal can the hare let the tortoise approach before resuming the race, which the tortoise wins in a photo finish? Assume that, when moving, both animals move steadily at their respec
An 9.00 {rm kg} point mass and a 14.0 {rm kg} point mass are held in place 50.0 {rm cm} apart. A particle of mass m is released from a point between the two masses 14.0 {rm cm} from the 9.00 {rm kg}
What potential difference between the plates will cause the thread to assume an angle of 30.0 degrees with the vertical?
The charge is uniformly distributed within the volume of each sphere. What is the magnitude of the electric field midway between the spheres? What is the direction of the electric field midway betwe
A parallel-plate capacitor whose plates are separated by 2.00 mm is charged by a 455 volt potential difference. What is the energy density of the field between the capacitor plates?
The dielectric of a parallel-plate capacitor is to be constructed from glass that completely fills the volume between the plates. The area of each plate is 0.50 m^2 (a) What thickness should the gla
What is the coefficient of kinetic friction between the skier and the horizontal surface?
Assuming the temperature of the air in the bubble remains constant, determine the absolute pressure at this depth h. The acceleration of gravity is 9.8 m/s2 .
A camel sets out to cross the desert, which is 23 km wide in the north-south direction. The camel walks at the uniform speed 2.91 km/hr along a straight line in the direction 55.9? north of East (on
The barrel of a rifle has a length of 0.806m. A bullet leaves the muzzle of a rifle with a speed of 629 m/s. What is the acceleration of the bullet while in the barrel? A bullet in a rifle does not
The loaded cab of an elevator has a mass of 3.0 103 kg and moves 172 m up the shaft in 23 s at constant speed. At what average rate does the force from the cable do work on the cab?
On Interstate 10 You drive on Interstate 10 from San Antonio to Houston, half the time at 58 km/h and the other half at 70 km/h. On the way back you travel half the distance at 58 km/h and the othe
An unmarked police car traveling a constant 105 km/h is passed by a speeder traveling 140 km/h. Precisely 1.00 s after the speeder passes, the police officer steps on the accelerator; if the police
A 59-kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.19. What would be the magnitude of the acceleration?
A 3.40 kg block is held in place by a constant applied force of 85.0 N that acts at an angle of 55.0° with the horizontal, as in Figure P4.60. Determine the minimum coefficient of static frictio
An Olympic long jumper leaves the ground at an angle of 16.8 ° and travels through the air for a horizontal distance of 6.45 m before landing. What is the takeoff speed of the jumper?
Let the x axis be parallel to the ground, the +y direction be vertically upward, and take as the origin the point on the ground directly below the top of the ramp. (a) How high above the ground is t
A football place kicker kicks a football from point 36 meter from the goal posts with an initial launch speed of 20m/s at an angle 53 degrees from the orizontal.The crossbar is 3.05 meters high. By
A cab driver picks up a customer and delivers her 3.30 km away, driving a straight route. The driver accelerates to the speed limit and, upon reaching it, begins to decelerate immediately. The magni
A satellites are placed in a circular orbit that is 2.15 × 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance?
A bowling ball (mass = 7.8 kg, radius = 0.11 m) and a billiard ball (mass = 0.38 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational forc