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An object weighing 333 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 301 N. Immersed in oil, the object weighs 313 N. Calculate the density
To get the result into the final form, it is useful to remember that ln(x2)=2ln(x) What is the electric potential (V)at the origin?
The end of the spring is pulled with a force of 71N for 0.6m. If the linear speed of the cylinder is found to be 2.38328 m/s, what is the angular speed of the cylinder in (rad/s)?
The rock band, The Creatures, have 3 hit albums. While on tour, they got silence for their new songs but cheers for their old hits. Soon, they play only old hits while on tour. This is an example of
Dennis, driving his 600 kg car, make a 90 degree turn. His speed before the turn is 15.0 m/s and after the turn is 20 m/s. What is the magnitude of the change in the car's momentum?
An airtight box has a removable lid of area 1.6 10-2m2 and negligible weight. The box is taken up a mountain where the air pressure outside the box is 0.75 105Pa. The inside of the box is completel
If you place a 0.0001-C charge halfway between the terminals of a common 9-v battery, 5 mm apart, what force will that charge experience?
A highway curve with a radius of 550 m is banked properly for a car traveling 130 km/h. If a 1620- kg Porshe 928S rounds the curve at 260 km/h, how much sideways force must the tires exert against
A proton is initially at rest at a point where the potential is 504 V. Some time later the proton is at a point where the potential is 193 V. If no force other than the electrostatic force acts on
For the different values given for the radius of curvature and speed, rank the magnitude of the force of the roller-coaster track on the cart at the bottom of each dip.
What is the acceleration of two falling sky divers (mass 108.0 kg including parachute) when the upward force of air resistance is equal to one-fourth of their weight?
518.0 without breaking, and cable B can support up to 410.0 . You want to place a small weight on this bar. What is the heaviest weight you can put on without breaking either cable?
The next day, another plane flies directly from A to airport B in a straight line. In what direction should the pilot travel in this direct flight? (Assume there is no wind during these flights.)
In a simplified roller bearing, the inner cylinder has a radius of 1.0 cm and is stationary. What is the angular speed of the small cylinders, which is between two inner and outer cylinders?
Boat A negotiates a curve whose radius is 352 m. Boat B negotiates a curve whose radius is 160 m. Each boat experiences the same centripetal acceleration. What is the ratio of the speed of boat A t
Bonnie and Clyde are sliding a 291 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 383 of force while Bonnie pulls forward on
A wire of mass 1 g and length 58 cm is stretched with a tension of 480 N. it si then placed near the open end of the tube shown in figure and stroked with a violin bow so that it oscilates at its f
A man pushes a lawn mower on a level lawn with a force of 188 N. If 35% of this force is directed downward, how much work is done by the man in pushing the mower 6.6 m?
A parallel-plate capacitor in air has a plate separation of 1.39 cm and a plate area of 25.0 cm2. The plates are charged to a potential difference of 255 V and disconnected from the source. The cap
The disk causes the matter to gradually spiral into the black hole. What will change in terms of the observable properties of the black hole as this process continues.
Three identical train cars, coupled together, are rolling east at 1.2 m/s . A fourth car traveling east at 4.4 m/s catches up with the three and couples to make a four-car train. A moment later, th
x component Fx = - 6x N, where x is in meters. The velocity of the body at x = 3.0 m is 8.0 m/s. (a) What is the velocity of the body at x = 4.0 m?
Sam, whose mass is 72.0 kg, takes off down a 55.0 m high, 12.0^circ slope on his jet-powered skis. The skis have a thrust of 220 N. Sam's speed at the bottom is 38.0 {rm m/s}. What is the coefficie
Use the principle of conservation of mechanical energy to find the speed of the block at the base of the incline. (carry the answer to one decimal)
At how many revolutions per minute should it rotate in order to simulate Earth's gravity-that is, so that the normal force on an astronaut at the outer edge would be the astronaut's weight on Earth?