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Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is µk = 0.24. Determine the change in the kinetic energy of block A as it moves from C to D, a distance of 23 m up the incline if the system starts from rest.
An object starting from rest accelerates with a constant acceleration A(none) for a time T(none) after which it moves at a constant velocity for T1 seconds. what is the total distance the object traveled
A typical adult human lung contains about 310 million tiny cavities called alveoli. Estimate the average diameter of a single alveolus
A meter stick is freely pivoted about the 20cm mark. Find the frequency of the small amplitude oscillations
A constant force applied to object A causes it to accelerate at 6 m/s^2 .The same force applied to object B causes an acceleration of 3 m/s^2. Which object has the smallest mass
particle a of charge 4.00 10-4 c is at the origin particle b of charge -5.00 10-4 c is at 7.00 m 0 and particle c of
An olive is at the bottom of a glass of alcohol (n = 1.36), 6.51 cm beneath the surface. what is the apparent depth d' of the olive
A member of an aircraft maintenance crew wears protective earplugsthat reduce the sound intensity by a factor of 380. When a jetaircraft is taking off, the sound intensity level experienced bythe crew member is 84 dB.
A typical lightbulb in your house is rated 200 W, which means that the bulb dissipates 200 W when connected to a DC voltage of 110 V. (a) What is the current through the lightbulb? (b) If the voltage is reduced to 55 V, what is the dissipated powe..
for safety in climbing a mountaineer uses a nylon rope that is 50 m long and 1.0 cm in diameter. when supporting a
A circuit consists of a resistor, an ideal 1.2-H inductor and an ideal 60-Hz generator, all connected in series. The rms voltage across the resistor is31 V and the rms voltage across the inductor is 37 V.
Two parallel wires 10 cm apart carry currents of 18 A. What is the magnetic force between two wires for both cases
An object, 0.75 cm tall, is placed 12.0 cm to the left of a diverging lens (f = -8.00 cm). A converging lens is placed 8.00 cm to the right of the diverging lens. The final image is virtual and is 30 cm to the left of the diverging lens.
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