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Three forces, act on a mass of 4.2 kg. The forces are X = 2.0 N acting to the east, Y = 5.0 N acting 45o to the north of east, and Z = 4.0 N acting 30o to the north of west. What is the magnitude of the net acceleration of the mass?
What is the maxium power that can be supplied by the outlets without blowing the fuse? How many 1,200 W appliances can be plugged into thesockets without blowing the fuse?
A Mercedes-Benz 300SL (m = 1700 kg) is parked on a road that rises 20° above the horizontal. What is the magnitude of the normal force
a small plastic sphere with a charge of -7.0 nc is near another small plastic sphere with a charge of -12 nc. if the
A 76 man weighs himself at the north pole and at the equator. How much higher is the scale reading in the north pole and by how much
Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G, What is the density of the sun
A 1.0-kg ball is attached to the end of a 2.5-m string to form a pendulum. This pendulum is released from rest with the string horizontal. What is the speed of the block just after the collision
Tarzan swings on a 30.0-m-long vine initially inclined at an angle of 30.0° with the vertical. What is his speed at the bottom of the swing if he starts from rest
Water at 20.0 °C is sprayed onto 0.236 kg of molten gold at 1063 °C (its melting point). What is the minimum mass of water that must be used
An aluminum wire having a cross-sectional area equal to 5.10 10-6 m2 carries a current of 3.50 A. Find the drift speed of the electrons in the wire
A certain lightbulb has a tungsten filament having a resistance of18 Ω at 25°C and 150 Ω whenhot. Assume R = R0[1 +α(T - T0)] can be usedover the large temperature range here. Find the temperature of the filament when it is hot.
With two fingers, you hold an ice cream cone motionless upside down the mass of the cone is m, and the coefficient of static friction between your fingers and the cone is? When viewed from the side, the angle of the tip is 2?
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long, What is the distance first traveled by the plane
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