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A 54 kilogram ice skater is moving at 4.01 meter per second when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.808 meter around the pole.
(a) Find the force exerted by horizontal rope on her arms.
(b) Obtain what is the ratio of this force to her weight?
The magnetic field of the Earth at acertain location is directed vertically downward and has amagnitude of 50.0 μT. A proton is moving horizontallytoward the west in this field with a speed of 6.20 ×106 m/s.
in a needle biopsy, a narrow strip tissue is extracted from a patient using a hollow needle. rather than being pushed by hand, to ensure a clean cut the needle can be fired into the patient's body by a spring. calculate the maximum speed of the nee..
An object is placed in front of a concave mirror with a 24.1-cm radius of curvature. A real image twice the size of the object is formed. At what distance is the object from the mirror
once upon a time a famous zoologist was hunting antelope for a zoo with a dart gun that fired darts with a range of 100
An airplane takes off at sea level and climbs to a height of 475 m. Estimate the net outward force on a passenger's eardrum
Estimation instantaneous rate of evaporation
An electron is released from rest at the negative plate of aparallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
calculate the absorbed dose in gy to the skin of a person which receives 1500 ergsgm of beta radiation from a cloud of
A tractor is pulling a sled at a velocity of 6 ft/s. If the rear wheels are 5 ft in diameter and the front wheels are 2 ft in diameter. What is angular velocity of the front wheels
A Carnot engine takes an amount of heat QH = 111 J from a high-temperature reservoir at temperature TH = 1030 °C, Find the amount of work that is obtained from this process
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 19.0° below the horizontal, Find the car's position relative to the base of the cliff when the car lands in the ocean
An outfielder throws a 0.150 kg baseball at a speed of 20.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball
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