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A block of mass 2.50 kg is pushed 2.60 m along a frictionless horizontal table by a constant 20.0 N force directed 25.0° below the horizontal. Determine the work done by the net force on the bloc
Starting from rest, a 4.30-kg block slides 2.00 m down a rough 30.0° incline. Determine the work done by the force of gravity
When a certain air-?lled parallel-plate capacitor is connected across a battery, it acqquires a charge (on each plate) of magnitude 131 µC. What is the dielectric constant of the slab
A person in Inertial system S sees two objects moving parallel to one another on a straight path. Find the speed of one object with respect to the other
A cat is being chased by a dog. Both are running in a straight line at constant speeds. How fast did the cat run
A carnival merry-go-round rotates about a vertical axis at a constant rate. A man standing on the edge has a constant speed of 3.26 m/s, What is the magnitude of r vector
A very long straight wire carries current 44 A. In the middle of the wire a right-angle bend is made. Determine the magnetic field at the center of the arc
A current of 23.0 mA is maintained in a single circular loop of 3.80 m circumference. Calculate the magnetic moment of the loop
A blue car with mass mc = 442 kg is moving east with a speed of vc = 22 m/s and collides with a purple truck with mass mt = 1213 kg that is moving south with a speed of vt = 12 m/s. find the magnitu
In order to drink from your glass you first need to lift it to your mouth. As you begin to lift your 0.20 kg glass of water, it is accelerating upwards at 0.090 m, What is the net force acting on th
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 10.00 cm long and 3.00 mm in diameter is compressed an average of 65.0 µm by a 0.415 kg hammer during
A hole in an iron plate has a radius of 2.300 cm at STP. When the plate is heated to 100 C, what is the hole diameter
A gas in an engine undergoes a reversible cycle in which 152 Joules of work are done and 419 Joules of heat are supplied by the fuel. what would the high temperature be
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 35? angle. What vertical height does the block reach above its starting point
Consider two forces exerted on a 65kg object: one 200. N acting at 25 degrees and another of 100. N acting at 45 degrees. find the net force acting on the object
Some thermometers indicate temperature by means of the thermal expansion of alcohol. by what percent does the volume change if the temperature changes by 9 F
A 250 N force is applied at a37° angle to the surface of theend of a square bar. The surface is 4.00 cm on a side. What is the shear stress on the bar
A 1.50-cm-diameter parallel-plate capacitor with a spacing of 0.100mm is charged to 100V. What is the total energy stored in the electric field
A 80 kg woman fell from an open window 0.5m above above a fairly soft shrub. Estimate the average stopping force of the shrub on the woman
Assume the distance between the protons in the H2 molecule is 7.50 10-11 m. Find the energy of the fourth excited rotational state, with J = 4
Cesium is a monovalent metal having a density of 1.870 g/cm3 and a molar mass of 132.9 g/mol. Use this information to calculate the density of charge carriers
A woman using a rocket pack hovers near a balcoy. The mass of the woman with gear is 100 kg and her tanks hold 50 kg of rocket fuel. What rate of fuel consumption is required for hovering
A 15.0g bullet with a speed of v=235m/s is fired into a block of wood that is initially at rest on a frictionless surface. Determine the mass of the wooden block
A sled is being pulled across a horizontal patch of snow. Friction is negligible. By what percentage would the sled's kinetic energy have increased
A 12kg hammer strikes a nail at a velocity of 8.2m/s and comes to rest in a time interval of 8.0. What is the average force acting on the nail