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Question1
A 0.225kg sample of tin originally at 97.5 degrees c is dropped into 0.115kg of water firstly at 10.0 degrees c. If the exact heat capacity of tin is 230 J/kg times c, what is closing equilibrium temperature of the tin-water mixture?
Question2
An airtight box has a detachable lid of area 1.3 x 10-2 m2 and minor weight. The box is taken up a mountain where air pressure outside the box is 0.85 x 105 Pa. The inside of the box is completely evacuated. What is the magnitude of the force necessary to pull the lid off the box?
A sinusoidal wave travels along a stretched string. A particle on the string has a maximum velocity of 1.00m/s and a maximum acceleration of 270m/s^2. Find the frequency of the Wave
A 965-kg satellite orbits the Earth at a constant altitude of 94-km. What is the change in the system's kinetic energy
Four 3.5 kg spheres are located at the corners of a square of side 0.60 m. Calculate the magnitude and direction of the gravitational force
A car starts from rest and then accelerates uniformly to a linear speed of 16 m/s in 42 s. If the tires have a radius of 27 cm, what are the following.
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
A disc has a radius of 2.20 cm and a mass of 27.0 grams and is initially at rest. Starting at time t=0, two forces are applied tangentially to the rim as indicated, calc the moment of inertia of the uniform disc
A roller-coaster car moves 177 ft horizontally and then rises 139 ft at an angle of 30° above the horizontal. It then travels 139 ft at an angle of 40° downward. What is its displacement from its starting point? Use graphical techniques.
A nickel crystal is used as a diffraction grating for x-rays. Then the same crystal is used to diffract electrons. what is the kinetic energy of each electron
A certain medical machine emits x-rays with a minimum wavelength of 0.025 nm. One day, the machine has an electrical problem and the voltage applied to the x-ray tube decreases to 80 percent of its normal value. Now what is the minimum x-ray wavel..
You decide to travel by car for your holiday visits this year. You leave early in the morning to avoid congestion on the roads. How far did you travel on this trip
A 9.0×10-24-kg particle is vibrating with simple harmonic motion with a period of 1.9×10-5 s, Find the maximum displacement of the particle
A small cube, s=0.25m, sits on a surface where a uniform electric field of 250.0 N/C is directed downward at a 35.00 angle to the horizontal, Find the flux through either of the two sides for which flux is maximum
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