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The equation for the displacement in meters of an object moving in SHM is x(t) = 1.50 cos (4.20t) where t is in seconds. (a) What is the maximum speed of the object?
Rod, A which is 30 cm long, expands by 0.045 cm when heated from 0oC to 100oC. Rod B, also 30 cm long expands by 0.075 cm for the same change in temperature. A third Rod C, also 30 cm long is made
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 6000 tonnes to a height of h = 11.0 m (1 tonne = 1000 kg). How much work is done by the crane?
When a potential difference of 160 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 36.0 nC/cm2. What is the spacing between the plates?
A 1700 kg sports car accelerates from rest to 85 km/h in 7.1 s. What is the average power delivered by the engine?
A skier of mass 79 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him 55 m up a 30° slope (assumed frictionless) at a constant speed of 2.8 m/s?
What magnification of the fish is produced by the water in the bowl for a viewer looking along a line that includes the fish and the center, with the fish on the near side of the center?
Consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper. Find the magnitude of the man's force for both designs.
If the same capacitor is connected to another battery and 72.0 µC of charge is stored on the capacitor, what is the voltage of the battery?
The other end of the string is attached to a massless axel through the center of an orange sphere on a flat horizontal surface that rolls without slipping and has mass ms = 3.2 kg and radius Rs = 0
A wave in the ocean has amplitude of 3 m. winds pick up suddenly increasing the waves amplitude to 6 m. How does this change in amplitude affect the wave's frequency and the amount of it transports
What is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 degrees Celcius?
What electric field E (strength) will cause the bead to hang suspended in the air?What electric field E (direction) will cause the bead to hang suspended in the air?
A thin, horizontal copper rod is 1.59397 m long and has a mass of 34.2472 g. The acceleration of gravity is 9.8 m/s2 . What is the minimum current in the rod that will cause it to float in a horizonta
Coefficient for aluminum is 2.4 10-5°C-1, and the average volume expansion coefficient for turpentine is 9.0 10-4°C-1.) What is the volume of turpentine remaining in the cylinder at 77.0°C
a) Compute the speed of each puck after the collision. b) Is the collision perfectly elastic? If not, what fraction of the original kinetic energy of puck A is 'lost'?
This time getting a reading of 75 psi. Air was neither added to nor removed from the tire, and its temperature did not change. What explains this discrepancy?
A bat at rest sends out ultrasonic sound waves at 45.0 kHz and receives them returned from an object moving directly away from it at 35.0 m/s. What is the received sound frequency?
Over the next few days, you do talk to your friend about it. Your actions suggest that you are in which of Kohlberg's moral reasoning stages?
Two conducting spheres of radii R=6.0cm and r=4.0cm are connected by a long thin conducting wire. They share a total charge of 1.20X10^(-6) C. Find the charge on each sphere and the electric potent
The cloth is pulled with a constant acceleration of 3.00 m/s2. How far does the mug move relative to the horizontal tabletop before the cloth is completely out from under it?
Calculate (a) the average density of the white dwarf, (b) the surface free-fall acceleration, and (c) the gravitational potential energy associated with a 1.00-kg object at the surface of the white
Boat A negotiates a curve whose radius is 360 m. Boat B negotiates a curve whose radius is 120 m. Each boat experiences the same centripetal acceleration. What is the ratio of the speed of boat A t
Rests on two concrete supports, one at each end. He stops one-fifth of the way along the bridge. What is the magnitude of the force that a concrete support exerts on the bridge at each end?
A 240 block on a 54.0 -long string swings in a circle on a horizontal, frictionless table at 80.0 . What is the speed of the block? What is the tension in the string?