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Q1. A weight with a mass of 57 kg is suspended from a point near the right hand end of a uniform boom with a mass of 60 kg. To support a uniform boom a cable runs from this same point to a wall (left hand vertical coordinate) and by a pivot on the same wall at an elevation of 3m. (Max is 8.5m, so left side of triangle is 6.5, bottom is 8, and hypotenuse is T). Compute the tension in the cable. The acceleration of gravity is 9.8.
Q2. Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce the current of 3.00 A for 5.00 h is rated at 15.00 A h.
What is the total energy stored in an 8.0-V battery rated at 49.0 A h?
What is work done by the non-conservative force
How many homes could be heated with the waste heat
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on the projectile when it is going down as it did when it was going up.
Determine the tension in each string
A certain car battery with a 12.0 V emf has an initial charge of 178 A•h. assume that the potential across the terminals stays constant until the battery is totally discharged, for how long in hours can it deliver energy at the rate of 115 W.
Calculate the volume charge density of the atmosphere
The effects of the spin of the earth
How long does the total trip last
Each speaker produces a tone with a frequency of 200 Hz on a day when the speed of sound is 330 m/s. The person is 1.65 m from one speaker and 4.95 m from the other. What sort of interference does the person sense.
Evaluate the electrostatic energy of two opposite charges
You have a 56.9-mF capacitor initially charged to a potential difference of 10.1 V. You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V.
Study of the fragment
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