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A 40.0 kg wagon is towed up a hill inclined at 17.3° with respect to the horizontal. The tow rope is parallel to the incline and has a tension of 140 N. Assume that the wagon starts from rest at the bottom of the hill, and neglect friction. How fast is the wagon going after moving 80 m up the hill?
A 0.93-µF capacitor is charged by a 37.0-V power supply. Find the maximum current in the resulting oscillations
1. Chameleons use their tongues to catch their prey. Their tongues typically accelerate at 250 m/s2 for up to 20 ms, then they travel at constant speed for a further 30 ms. During this total duration, of acceleration plus constant motion, of 5..
Light of wavelength 60nm illuminates a hydrogen atom in an excited state. What energy level was the electron in initially
A 2.9-cm-tall object is 35 cm in front of a converging lens that has a 8.8 cm focal length. Calculate the image position and height
A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the right at 50.0 m/s, What is the horizontal component of the impulse the bat imparts to the ball
A 20 kg piece of steel pipe that is 20 cm in diameter, 80 cm long, What is its angular velocity and its total kintetic energy
A uniform disk of mass 7.00m and radius 7.00r can rotate freely about its fixed center like a merry-go-round, What is the ratio K/K0 of the new kinetic energy of the two-disk system to the system's initial kinetic energy
A lightbulb has a resistance of 170 ? when operating with a potential difference of 110 V across it. What is the current in the lightbulb
At what height above the surface of the earth does the balloon have a velocity of 8.10 m/s.
An archeological specimen containing 3.4g of carbon has an activity of 0.33 Bq. How old (in years) is the specimen
A small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, the boat sinks an additional 3.50 cm into the river. What is the weight of the truck
A simple Pendulum is released from the horizontal position. The length of its string is 1.5 m , and the mass is 50 g. find The tangential acceleration of the mass
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