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a) Two 68 g ice cubes are dropped into 234 g of water in a thermally insulated container. If the water is initially at25°C, and the ice comes directly from a freezer at -15°C, what is the final temperature at thermal equilibrium? (Neglect the heat capacity of the glass.)
b) What is the final temperature if only one ice cube is utilized?
A projectile is launched upward at an angle. What must this angle be with respect to the horizontal in order for the projectile to travel the farthest distance? Describe why.
a. the muon is traveling at 0.982 c what is its momentum? the mass of such a muon at rest in the laboratory is known
A string 3 meters long has a mass of 2 grams. one end of the string is attached to a wall, what is the speed of a transverse wave in this string
A capacitor with an initial potential difference of 100 V isdischarged through a resistor when a switch between them is closedat t = 0. What is the time constant of the circuit
A 150MW laser pulse is focused with a lens to a diameter of 1.0?m. What is the laser beam's electric field amplitude at the focal point
A coil of area 0.100 m2 is rotating at 70.0 rev/s with the axis of rotation perpendicular to a 0.200 T magnetic field. If the coil has 700 turns, what is the maximum emf generated in it
In a local bar, a customer slides an empty beer mug on the counter for a refill. The bartender is momentarily distracted and does not see the mug, with what velocity did the mug leave the counter
A horizontal plank of mass m and length L is pivoted at one end. The plank's other end is supported by a spring of force constant k. Find the angular frequency (omega) of simple harmonic motion
Suppose you have a tube 1.20 m long, open on both ends. Determine the frequency of the 2nd overtone, assuming the speed of sound to be 343 m/s. Repeat for the same length tube but with a closed end.
two ships a and b leave port at the same time. ship a travels northwest at 21 knots and ship b travels at 30 knots in a
A grinding wheel of radius 0.340m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. The constant torque produced by this force is 64.5 N • m. Find out the magnitude of the friction forc..
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 117-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
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