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A 0.750 kg sample of water is initially ice at temperature -20°C. What is the sample's entropy change if its temperature is increased to 50°C?
Some forms of cancer can be treated using proton therapy in which proton beams are accelerated to high energies, then directed tocollide into a tumor, killing the malignant cells. Suppose a protonaccelerator is 7.3 m long andmust accelerate proton..
Presume 8.00 g of hydrogen is separated into protons and electrons. Presume also the protons are placed at the earth's North Pole and the electrons are placed at the South Pole. What is the resulting compression force on the Earth?
A mouse of mass m jumps on the outside edge of a freely turning ceiling fan of rotational inertia I and radius R. By what ratio does the angular velocity change
A series circuit is made up of a 400 ohm resistor, a 3 henry inductor and a 8 microfarad capacitor all placed in series. Determine the steady state current flowing in this circuit
A particular motor can provide a maximum of 110.0 N • m of torque. Assuming that all of this torque is used to accelerate a solid, What angle will it rotate through to do this
A 0.56 kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
An 85.1 kg base runner begins his slide into second base while moving at a speed of 5.9 m/s. The coefficient of kinetic friction between his clothes and ground is 0.68. He slides so that he comes to rest just as he reaches the base.
A laboratory technician drops a 0.0840-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. Compute the specific heat capacity of the sample
The lower block in is pulled on by a rope with a tension force of F = 31 N.The coefficient of kinetic friction between the lower block and thesurface is 0.40. The coefficient of kinetic friction between the lower block and the upper block is also ..
Three point charges are located at the corners of an equilateral triangle as shown. Each leg of the triangle has a length of 1.38 meters. And the charges have values as follows. Q1 = 4.61 microcoulombs, Q2 = - 8.69 microcoulombs, and Q3 = -6.09 m..
The block moves on the table a distance d = 25 cm. The coefficient of kinetic friction μk = 0.2. Find the starting speed of the bullet.
The blades of a 60 cm diameter fan spin at a rate of 25 rotations per second (25 Hz). Point A is on the end of one of the blades, and point B is 15 cm from the end of one of the blades. Find the angular velocity
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