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A child holds a sled on a frictionless, snowcoveredhill, inclined at an angle of 30?.72 NF30?If the sled weighs 72 N, find the force exertedon the rope by the child. Answer in units of N.
1. Find Debye length in p-type Ge at 300 K if Na = 1014 cm-3. Assume that all acceptors are ionized, o = 16. 2. Calculate the bipolar diffusion coefficient of intrinsic (un doped) Ge at 300 K.
In the circuit below, the currents through the four resistors are as indicated. Use the junction rule to write the equations representing the relationship between the currents at the point c.
A freight car with a mass of 10 metric tons is rolling at 108 km/h along a level track when it collides with another freight car, what is the mass of the second car
The figure shows an object and its image formed by a thin lens. Assume that L=15.0 cm and y=3.25mm. what is the focal length of the lens? what is the height of the image?
A 21gram sample of copper is at 12oC. If 1663 Joule of energy is added to the copper, find what is its final temperature
You have a 120g meterstick. A) Where should you place the meterstick atop your finger so it balances? (Express your answer to two significant figures and include the appropriate units.) B) Where's the balance point if you place an additional 150 mass..
What is weight of the parachutist
How much would 25 kg of gold weigh? (Au = 19,300 kg/m3). What would be the apparent mass of 25 kg of gold if it were underwater?
The four strings pass over the bridge of a violin, as shown below. The strings make and angle of 72.0° with the normal to the plane of the instrument on either side of the bridge. determine the force pulling the segment back to its equilibrium posi..
A 1 m diameter wagon wheelconsists of a thin rim having a mass of 6 kg and six spokes, eachwith a mass of 1.5 kg. Find the moment of inertia of the wagon wheel for rotation about its axis
A block of unknown mass is attached to a spring of spring constant 7.9 N/m and undergoes simple harmonic motion with an amplitude of 13.2 cm. Calculate the mass of the block
The two 0.50 kilogram weights of a cuckoo clock descend 1.5 meter in a three-day period. Find at what rate is their total gravitational potential energy decreased
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