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Three 3 uC charges are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 uC charge. Find the electric field at the center of the square.
A horizontal force of magnitude 34.5 N pushes a block of mass 4.09 kg across a floor where the coefficient of kinetic friction is 0.609. During that displacement, the thermal energy of the block increases by 39.3 J. What is the increase in thermal ..
The emissivity of tungsten is 0.350. A tungsten sphere with a radius of 1.19 is suspended within a large evacuated enclosure whose walls are at a temperature of 285.0 . What power input is needed to maintain the sphere at a temperature of 2500.0 i..
An airplane moves 140 m/s as it travels around the vertical circular loop which has a 1 km radius. What is the magnitude of the resultant force on the 70 kg pilot of this plane at the bottom of this loop.
If a 49.0 N ·m torque on a wheel causes angular acceleration 17.2 rad/s2, what is the wheel's rotational inertia
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. A 1 kg mass is attached to the string at distance 15 cm from the left end. Then the mass hangs suspended in Earth's gravity. (a) Determin..
The rms speed of 1.0 mol of argon atoms (atomic weight 40 g/mol) in a box is 680 m/s. Treat the gas as ideal. What is the temperature inside the box
the magnetic field 7.5 cm directly above the center of a 25 turn coil of radius 15cm is 0.80 mT. Find the current in the coil
Sam, whose mass is 71.0kg , takes off down a 45.0m high, 8.00? slope on his jet-powered skis. What is the coefficient of kinetic friction of his skis on snow
question1as standing at the edge of the roof of a building you throw a stone upward with an initial speed of 7.87 ms.
A semi truck is stopped across a road. As a driver approaches at 20 m/s he sounds the horn of his car (f=350 Hz). find the frequency of the horn heard by the truck driver
In frozen Minnesota the Winter Sports Carnival includes some unusual events. Since it is dangerous to run on ice, each runner runs on ice, With what speed does the crowd see the woman moving
If the heavier fragment lands back at the equal point from which the shell was launched, where will lighter fragment land and how much energy was released in the explosion.
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