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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 t he steam-side coefficient
Find out the speed of the satellite
Find tension in the back muscle and the compressional force
Evaluate the electrostatic energy of two opposite charges
A steel wire of length 1.97 with circular cross section must stretch no more than 0.260 when a tensile (stretching) force of 400 is applied to each end of the wire. What is the minimum diameter necessary.
A converging lens of focal length 18 cm is 30 cm to the left of a diverging lens of focal length - 6 cm. a coin is placed 12 cm to the left of the converging lens. Find (a) location and (b) magnification of the coin's final image.
What current is required in the windings of a long solenoid that has 1710 turns uniformly dispersed over a length of 0.547 m in order to produce a magnetic field of magnitude 0.0002 T at the center of the solenoid.
An average force of 201 N is exerted to draw the string back 1.3 m. unless otherwise directed, imagine that air resistance is negligible. Illustrate energy bar graphs to solve the difficulty .
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 × 1015 Hz.
What is the final angular velocity
A screen is placed 1.30 {rm m} behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 1.70 {rm cm} wide-that is, two first-order diffraction minima are separated by 1.70 {rm cm}.
What is magnitude of the net force on the student
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