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A 9080-kg car is travelling at 26.8 m/s when the driver decides to exit the freeway by going up a ramp. After coasting 404 m along the exit ramp the car\'s speed is 12.6 m/s, and it is h = 10.7 m ab
A 40.0 cm -diameter cylinder of helium gas is 50.0cm long and at 30.0 C. The pressure gauge reads 120 psi. How many helium atoms are in the cylinder? What is the mass of the helium? What is the heli
Two very small objects, whose charges are 1 C and -1 C are separated by 1.5 m. What is the magnitude of the electric force that one charge exerts on the other?
A charge q = 4.11x10-9 C is placed at the origin and a second charge equal to -2q is placed at x=1.00 m. Find the electric potential midway between the two charges.
Suppose the charge is released from rest at the positive plate and that it reaches the negative plate with a speed of 3.4 m/s. What is (a) the mass of the charge and (b) its final kinetic energy?
Find (a) the electric field within the capacitor and (b) the potential difference between the plates .
A 0.145-kg baseball pitched horizontally at 39 m/s strikes a bat and is popped straight up to a height of 41 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average for
Although the magnitudes of the equipotentials and electric fields for electrode configurations (a) and (b) are consistent with interpretation of those arrangements as line charges, the shapes of the
An electric heater is rated at 1750 W, a toaster at 750 W, and an electric grill at 1250 W. The three appliances are connected to a common 120 V household circuit. (a) How much current does each dra
So the voltage equation for a Van de Graaff generator in the region outside the dome, r > R, is the same as that for a point charge with the same total charge.)
calculate the average force [exerted by the bat on the ball] during contact. [Let the positive axis lie along the line from the batter to the pitcher, with the batter at the origin.]
The two plates of a capacitor hold +3400 µC and -3400 µC of charge, respectively, when the potential difference is 900 V. What is the capacitance.
A 100 liter meteorological balloon is filled with helium at STP conditions (25oC and 760 mm Hg). What will its volume become at an altitude of 50,000 ft where the barometric pressure is 175 milibars
How much energy has been "lost" during these four oscillations? We have not learned anything about damped harmonic oscillators in class yet, so if you could please include all equations that you use
Object A, which has been charged to + 24.4 nc, is at the origin. Object B, which has been charged to -18.3nc , is at (x,y)=(0 cm, 2.80 cm ) . What is the y-component of the force on B due to A?
An aluminum baseball bat has a length of 0.619 m at a temperature of 16.7°C. When the temperature of the bat is raised, the bat lengthens by 0.000137 m. Determine the final temperature of the ba
A 0.250-mm-diameter silver wire carries a 40.0mA current. What are (a) the electric field and (b) the electron drift speed in the wire? The resistivity of silver is rho=1.6 10^{-8}Omega m, and the e
What constant force, applied parallel to the surface of the ramp, is required to push the box to the top of the ramp in a time of 3.90?
The normal human eye has maximum visual acuity with a pupil size of about 3 mm. For larger pupils, acuity decreases due to increasing aberrations; for smaller pupils, acuity decreases due to increas
The speeds are different because the pipe diameters are different. What is the gauge pressure of the water on the second floor?
(a) What is the change in the ball's momentum? kg·m/s (b) What is the impulse on the ball? N·s (c) What is the impulse on the wall?
A bat locates insects by emitting ultrasonic "chirps" and then listening for echoes from the bugs. Suppose a bat chirp has a frequency of 21 kHz. How fast would the bat have to fly, and in what dire
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 21 at an angle of 35 degrees above the horizontal. a) How long does it take f
Sphere A is brought into contact with sphere B and the two are allowed to reach equilibrium. Sphere A is then removed. Next sphere A is brought into contact with sphere C and the two are allowed to
While the spring is being compressed, what work is done on the block by the gravitational force on it?