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A 1010-kg car is being driven up a 6.03 ° hill. The frictional force is directed opposite to the motion of the car and has a magnitude of 546 N. A force F is applied to the car by the road and propels the car forward. In addition to these two forces, two other forces act on the car: its weight W and the normal force FNdirected perpendicular to the road surface. The length of the road up the hill is 263 m. What should be the magnitude of F, so that the net work done by all the forces acting on the car is 172 kJ?
A mule uses a rope to pull a box that weighs 3.0 x 10^ 2 N across a level surface with constant velocity. What is the normal force of the floor on the box
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How many balloons can the tank blow up
A continuous line of charge lies along the x axis, extending from x = +x0 to positive infinity. What is the direction of the electric field at the origin
The odometer (mileage gauge) of a car tells you the number of miles you have driven, A typical midsize car has tires 24.0 inches in diameter. How many revolutions of the wheels must the odometer count in order to show a mileage of 0.100 mile
A simple pendulum uses a steel wire as the "string." The length of this wire is 1.5 m at room temperature. What is the change in the period of the pendulum
a stone falls from rest from the top of a cliff. a second stone is thrown downward from the same height 3.4 s later
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. If the original star rotated once in 35 days, find the angular speed of the neutron star
A spring system consists of a stationary spring and a 100-gram mass attached to one end that slides along a horizontal frictionless surface, How much total energy is in the spring
questiona status newtons first law of motion. b a 2-kg object is affecting horizontally with a speed of 4 ms. how much
If a toaster is plugged into a source of alternating voltage with an rms value of 67 V, an rms current of 3.06 A occurs in the heating element. What is the average power input to the toaster
A jet flying at 109 m/s banks to make a horizontal circular turn.The radius of the turn is 3810 m, and the mass of the jet is2.33*105 kg. Calculate the magnitude of the necessary lifting force. L= ?
A parallel plate capacitor has a capacitance C when there is no dieletric inside of it. Suppose a wedge of material with dielectric constant K is inserted in between the plates of the capacitor, find the new capacitance with this dielectric inserte..
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