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1. Estimate the spring constant for each of the four springs on a 1260kg car if the static weight of the car causes the springs to compress 10.0cm.
2. Does the mass of the pendulum affect the period? Why or why not? Briefly describe an experiment to test your hypothesis.
3. Using the equation for the period of a pendulum, determine the period of a pendulum that is 3.0m long.
A 500 turn solenoid with a length of 20 cm and a radius of 3.0 cm carries a current of 3.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have the same radius as the solenoid. Find when the curre..
Assuming biological substances are 98 percent water, estimate the masses of a cell with a diameter of 0.7 µm, a human kidney, and a fly. Take a kidney to be roughly a sphere with a radius of 5.0 cm and a fly to be roughly a cylinder 4.90 mm long a..
Three point charges are located on the positive x-axis of a coordinate system. Charge q1 = 2.0 nCis 2.0 cm from the origin, What is the net force
How many 185 W lightbulbs can you use in a 191 V circuit without tripping a 15 A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each lightbulb is 131 V.)
The loaded cab of an elevator has a mass of 3.0 x10^3 kg and moves 171 m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on the cab.
After 0.800, its displacement is found to be 0.13 on the opposite side and it has passed the equilibrium position once throughout this interval.
A 18.60 kg piece of zinc at 75 degrees Celsius is placed in a container of water. The water has a mass of 20 kg and has a temperature of 10.10 degrees Celsius before the zinc is added. What is the final temperature of water and zinc.
A uniform plank of length 4.3m and weight 236N rest horizontally on two supports, with 1.1m of the plank hanging over the right support. To what distance x can person who weighs 450N walk on the overhanging part of the plank before it just begins ..
Styrofoam has a density of 300 kg/m^3. What is the maximum mass that can hang without sinking from a 40cm diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.
The time-varying current in an LC circuit where C = 11.5?F is given by i(t) = (1.30 A) sin (1230t), where t is in seconds.
A place kicker should kick a football from a point 35m (about 38.0 yd) from the goal, and the ball should clear the crossbar, which is 3.05 m high. When kicked, ball leaves the ground with a speed of 21.0 m/s at an angle of 55° to the horizontal.
A parallel-plate capacitor with only air between the plates is charged by connecting it to a battery, A voltmeter reads 46.0V when placed across the capacitor, What is the dielectric constant of this material
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