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1. Naim Suleimanoglu of Turkey has a mass of 62 kg (136 lbs), yet he can lift 3 times his mass. This feat has earned him the nickname "Pocket Hercules". How much potential energy would a barbell have if he lifted the barbell 1.7 m above the floor?
2. Susie Maroney from Australia set a women's record in long-distance swimming by swimming 93.625 km in 24 h.
(a) What her average speed in m/s?
(b) If she had a mass of 55 kg, how much kinetic energy did she have?
3. A 7.85×1011 kg comet strikes the Earth at a speed of 25 km/s. Which is greater, the amount of kinetic energy this comet had or the amount of energy released by the largest nuclear weapon ever built (4.2×1015 J = 100 million tons of TNT)? Such a comet collision has been suggested as having caused the extinction of the dinosaurs.
The frequency of light reaching Earth from a particular galaxy is 16% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
In 13.6 s, 220 bullets strike and embed themselves in a wall. What is the average change in momentum per second for the bullets
Water (viscosity = 1centipoise) flows through a cylindrical plug in a laboratory experiment. what is the permeability of the sample in cm^(2)
Light in a vacuum is incident on a transparent glass slab. The angle of incidence is 37.3°. compute the index of refraction of the liquid
A 71 kg parent and a 19 kg child meet at the center of an ice rink. They place their hands together and push. what is the magnitude of the parent's acceleration
In a mass spectrometer, a singly charged ion having a particular velocity is selected by using a magnetic field of 0.1 T perpendicular to an electric field of 8.00 102 V/m. What is the mass of the ion
An object is sliding on a horizontal surface. The coefficient of kinetic friction between the object and the surface is 0.250. how far will the object travel before it stops
Oxygen diffuses from the surface of insects to the interior through tiny tubes called tracheae. An average trachea is about 2 mm long, Find the concentration of oxygen in the air
The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2, The potential on the outer surface of the membrane is +52.2 mV greater than that on the inside surface. How much charge resides on the outer surface
How far did you travel on this trip? What was your average speed.
Wile E. Coyote and the Roadrunner are fictional cartoon characters. The premise of the cartoon is that Wile E. What is the magnitude of the impulse on the second wagon
Two long, parallel conductors carry currents I1 = 3.10 A and I2 = 5.10 A, both directed into the plane of the computer screen. Find out the magnitude and direction of the resultant magnetic field at a point midway between the wires. (b) Find out the ..
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