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A bicycle wheel is rotating at 45rpm when the cyclist begins to pedal harder, giving the wheel a constant angular acceleration of 0.48rad/s2 .
1) What is the wheel's angular velocity, in rpm, 8.0s later?
2) How many revolutions does the wheel make during this time?
A jeweler working awith a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 C, what mass of water at 25 C is needed to lower the rings temperature to 38 c.
The largest building in the world by volume is the Boeing 747 plant in Everett, Washington. It measures approximately 634 m long, 709 yards wide, and 108 ft high. a)What is its volume in cubic feet? b) Convert your result from part A to cubic mete..
A closed cylindrical tank has a height of 0.77m. The tank is at first filled with air at a pressure of 2.00 atm. Water is pumped into the tank until the air pressure reaches 6.1 atm. The temperature is constant. Find out the height of the compress..
A large wooden turntable in the shape of the flat disk has a radius of 2.00 {rm m} and a total mass of 120 {rm kg}. The turntable is initially rotating at 3 {rm rad}/{rm s} about a vertical axis through its center.
Find the magnitude of the electron acceleration. Under an influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
A block of mass 0.540 kg is pushed against the horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m.
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0° below the horizontal, Find the length of time the car is in the air
A father and a daughter balance a teeter-totter to illustrate the principle of the lever. If the father whose weight is 150 N is 8 m from one end, how far away on the opposite side of the fulcrum should the 50-N daughter stand to balance the teeter-t..
The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
Assume that the volume of the empty spaces between the candes is negligible. If the height of the candes in the container increases at the rate of 0.270 cm/s, at what rate (kilograms per minute) does the mass of the candies in the container increa..
Suppose that the net horizontal force is as a result of rolling friction only and take the free-fall acceleration to be g = 9.80 m/s^2.
A 0.100g plastic bead is charged by the addition of 1 x10^10 excess electrons (i.e. so the bead becomes negatively charged). What electric field (magnitude and direction) will cause the bead to hang suspended in the air?
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