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A 500 g ball swings in a vertical circle at the end of a 1.5-m-longstring. When the ball is at the bottom of the circle, the tensionin the string is 15 N. What is the speed of the ball at that point?
Rhea, one of Saturn's moons, has a radius of 765 km and an acceleration due to gravity of 0.278 m/s2 at its surface. Calculate its mass and average density.
A construction worker uses a steel tape to measure the length of an aluminum support column. what is the measured length when the temperature rises to 29.4°C
While exercising, the following physiological changes occur for a certain person. His systolic pressure increases by 46 %. Which change has the strongest effect on blood flow
An 8.5- {rm kg} point mass and a 15- {rm kg} point mass are held in place 50- {rm cm} apart. A particle of mass m is released from a point between the two masses 19- {rm cm} from the 8.5-{rm kg} mass along the line connecting two fixed masses.
A flywheel with a radius of 0.700m starts from rest and accelerates with a constant angular acceleration of 0.900rad/s^2. Compute the magnitude of the tangential acceleration of a point on its rim at the start
a 1.40 kg block is attached to a spring with spring constant 18 nm. while the block is sitting at rest a student hits
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
At amusement parks, there is a popular ride where the floor of a rotating cylindrical room falls away, leaving the backs of the riders "plastered" against the wall. Suppose the radius of the room is 3.08 m and the speed of the wall is 10.6 m/s whe..
A professor shipwrecked on Hooligan's Island decides to build a telescope from his eyeglasses and some coconut shells. Which lens should he use as the objective
A Goodyear blimp typically contains 4250 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. What is the mass (in kg) of the helium in the blimp
The length of the mercury column at the ice point and steam point are 5.0 cm and 40.0cm respectively. What is the temperature of the liquid
Reply in m/s. Also, why does the car's mass not matter.
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