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A 1400 kg car enters a passing zone and accelerates from 70km/h to 95 km/h to pass a slower car. How much work must be done on the car? If the car then brakes to a stop, how much work is done on it?
An attacker at the base of a castle wall 3.63 m high throws a rock straight up with speed 8.80 m/s at a height of 1.51 m above the ground. Find the change in speed of a rock
Show that the total charge contained in the charge distribution is Q. Show that the electric field in the region r = R is identical to that produced by a point charge Q at r = 0.
A mass is trapped on the x-axis. Its potential energy is given by U=-2x^3 -3x^2 +12x. Where x is i meters and U is in joules. A) Determine an expression for the force that acts on the mass as a function of position.
A 330 g air track cart on a horizontal air track is attatched to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. Find the acceleration of the cart and the hanging mass
A woman with mass 50 kg stands at the rim of a large disk rotating at 0.5 rev/s about its center axis. What is the difference in energy of the system
Diagnostic ultrasound of frequency 4.50 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
Theoretical Values for C = 100 microF and R=10 ohm; Resonant Frequency(Linear)= 90 hz, Calculate Resonant Angular Frequency
A 1.50mm -diameter glass bead is positively charged. The potential difference between a point 1.50mm from the bead, What is the charge on the bead
1 the ladder is 3.8 m long and the person is standing 1.1 m up the lenght of the ladder. the ladder makes an angle if
wo sources produce coherent light waves that come together at a detector located 1.60000 mm from one source, what is the longest possible value for the wavelength
A guitar string of diameter 0.79 mm and length 1 m is subject to a tension of 182 N. what is the Young's modulus of the string
A metal sphere of radius 5.00 cm is initially uncharged. How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.51 105 N/C at a point 8.28 cm from the center of the sphere?
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