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1. A man pulls a 300 N object across a horizontal surface using a100 N force applied at a 35° angle. What is the normal force? If the object is pulled at constant speed, what is the coefficientof friction?
2. A 5 N block slides down a20° incline at constant speed. What is the frictional force?
A frictionless plane is 10.0 m long and inclined at 34.0°. A sled starts at the bottom with an initial speed of 6.00 m/s up the incline. Determine the initial speed of the second sled
a cylindrical shell of radius 9 cm and length 297 cm has its charge density uniformly distributed on its surface. the
a capacitor c 2.88x10-6 f is charged by a 579 v battery and then connected in series to a rheostat variable resistor
While a hybrid car brakes to come to a stop at a traffic light, describe the energy transfer and materials used to transfer of this energy
Between 1911 and 1990, the top of the leaning bell tower at Pisa, Italy, moved toward the south at an average rate of 1.2 mm/y. The tower is 55 m tall. In radians per second, what is the average angular speed of the tower's top about its base?
Assume that a cloudy parcel has T = 275 K, wl = 1.5 g/kg. The background atmosphere has T = 274 K, and a relative humidity of 0.6. Assume a total pressure p = 600 hPa. What is the buoyancy of the cloudy parcel
an electron emitted by a heated cathode and accelerated through a potential difference of 2.0 kv enters a region with
A sign for the local cheese shop is hung by two strings of length 0.25 meters at either end from a 4 meter long pole with a mass of 200 kg. what is the coefficient of static friction between the wall and the pole
Water (density: 10^3 kg/m^3) flows at 15 m/s through a pipe with a raidus of .04m. What is the speed of the water flow of the pipe in the second floor
A transformer has 330 primary turns and 1340 secondary turns. The input voltage is 120 V and the output current is 15.0 A. What are the output voltage and input current
Consider two spheres of radius a with their centers separated by a distance d>>a. Find the capacitance of the system of the two spheres
A wave on a string has a speed of 397 m/s. If the tension in the string is 128 N and its length is 1.9 m, what is the mass of the string
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