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A spring lies on a horizontal table, and the left end of the spring is attached to a wall. The other end is connected to a box. The box is pulled to the right, stretching the spring. Static friction exists between the box and the table, so when the spring is stretched only by a small amount and the box is released, the box does not move. The mass of the box is 0.50 kg, and the spring has a spring constant of 70 N/m. The coefficient of static friction between the box and the table on which it rests is ?s = 0.51. How far can the spring be stretched from its unstrained position without the box moving when it is released?
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm. Hint: Use the linear relationship P = A + BT, where A and B ..
An electron on from the sun enters the earth's magnetic field high above its surface and undergoes a cicular motion. Calculate the raduis of the circle
A base on Planet X fires a missile toward an oncoming space fighter. The missile's speed according to the base is 0.81 c. How fast is the space fighter traveling relative to Planet X
estimate the gravitational potential energy of the system relative to the lowest point of the motion when the cat is at its highest point.
Light is incident normally on the largest face of an isosceles-right-triangle prism. What is the speed of light in this prism
A 17.0-g piece of Styrofoam carries a net charge of -0.75 µC and is suspended in equilibrium above the center of a large, compute the charge per unit area on the plastic sheet
A person has an exposed body area of 1.2 m2 and a body temperature of 37 oC. What is his heat loss by radiation if the surrounding walls are at a temperature of 22.5 oC? (Round answer to two significant figures)
A coin slides over a frictionless plane and across an xy coordinate system from the origin to a point with xy coordinates while a constant force acts on it. How much work is done by the force on the coin during the displacement
A golf ball of mass 0.047 kg is hit off the tee at a speed of 40.2 m/s. The golf club was in contact with the ball for 3.29E-3 s. Find the impulse imparted to the golf ball
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.875 rad/s. You, with a mass of 72.3 kg, Calculate the total angular momentum of the system.
A 1500-kg car moving east at 28.00m/s collides with a 1720 kg car moving south at 15 m/s and the two cars stick together.
Two identical capacitors are connected in parallel to an ac generator that has a frequency of 579 Hz and produces a voltage of 24 V. What is the capacitance of each capacitor
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