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Two blocks are connected on a horizontal frictionless table and pulled to the right with a force F= 60 N. If m1 = 30 kg and m2 = 20 kg, find the tension in the string connecting the two blocks.
A rock is tossed straight up with a velocity of 14 m/s When it returns, it falls into a hole 10m deep.
What friction torque is necessary to reduce its angular speed from 90.0 {rm rpm} to 45.0 {rm rpm} in a time interval of 32.0 {rm s}.
A 1.90-cm-high object is situated 12.8 cm in front of a concave mirror that has a radius of curvature of 10.4 cm, calculate the location and the height of the image
A box slides down a 36° ramp with an acceleration of 1.26 m/s2. find the coefficient of kinetic friction between the box and the ramp.
Compute the Brewster’s angle and angle of refraction.
A professional race-car driver buys a car that can accelerate at 5.3 m/s2. Find the velocity of the race car when the two drivers are side by side
The efficiency of a knife is 75%. If you push down on the knife with a force of 5 N to cut a piece of cake that is 6 cm thick, how much work is done on the cake
The sound level of a single vacuum cleaner is about 75dB and a television is about 55dB. What is the sound level number
A transformer has 590 primary and 170 secondary turns. An alternating potential of 90 V is applied to the primary
A "Carnot" refrigerator (reverse of a Carnot engine) absorbs heat from the freezer compartment at a temperature of -17°C, How much work must be done by the refrigerator to change 0.20 kg of water at 24°C into ice at -17°C
What is magnitude of the greatest force
What value of capacitance will ensure that an output voltage stays within 3 percent of the rated 22v . find an electric field between them and surface charge density on the plate.
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