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A 216 kg log pulled up a ramp by means of a roe that is parallel to the surface of the ramp. The ramp is inclined at 30 degrees with respect to the horiztonal . The coefficient of kinetic friction between the log and the ramp is .810 and the log has a acceleration of .9m/s squared. Find the tension of the rope.
an automoble speedometer has a range of 0 to 100 mph. the uncertainty in any reading is 2 of the maximum speed.a what
An astronomer observes a comet and measures the wavelength of the H? line to be at 486.2 nm. In the lab, the line is found to be at 486.1 nm. What is the Lorentz factor for the comet
calculate and compare the electron densities of a piece of aluminum 1 cm thick and a piece of iron of the same density
A technician wraps wire around a tube of length 40 cm having a diameter of 7.8 cm. Find the self-inductance of this solenoid
objects a and b are both positively charged. both have a mass of 200 g but a has twice the charge of b. when a and b
Consider a series LRC circuit with R=66 ?, L=0.19 H and C=0.1 µF. The current is 15 mA amplitude at 1.7 kHz. Find the angular resonant frequency of oscillations
Two steel juggling balls each carry a charge of2.75 μC. There is a repulsive force between themof 1.85 N. What is the distance between the centers of the two balls?
A river flows due east with aspeed of 2.2 m/s. A man steers amotorboat across the river. His velocity relative to the water is3.9 m/s due south. What is his velocity relative to the earth
the capacitor has a cross-sectional area a and a distance between plates of 10 mm. a battery with voltage of 30 volts
a water molecule consists of an oxygen atom with two hydrogen atoms bound to it . the angle between the two bonds is
A 50.6-cm diameter disk rotates with a constant angular acceleration of 2.10 rad/s2. Find the linear velocity and tangential acceleration
An electron moves through a uniform electric field E = (2.50 i + 5.00 j) V/m and a uniform magnetic field B = (0.400 k) T. Determine the acceleration of the electron
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