Determine the minimum force P to prevent the 30 kg uniform rod AB from sliding. The contact surface at B is smooth, whereas the coefficient of static friction between the rod and the wall at A is μs = 0.3.

An air conditioner takes outside air at 35°C and cools it to 15°C at a rate of 1 kg/s. Estimate the amount of power needed to do this. Recalculate the needed power if it is put in recirculation mode using inside air at 24°C and cools that to 15°C.

Which of the following is not a primary or fundamental dimension? (a) - mass m (b) - length L (c) - timer t (d) - volume V

Pressurized steam at 450 K flows through a long, thin-walled pipe of 0.5-m diameter. The pipe is enclosed in a concrete casing that is of square cross section and 1.5 m on a side.

Suppose the loop is moving toward the solenoid (to the right). Will current flow through the loop down the front, up the front, or not at all? Explain in terms of magnetic forces exerted on the charges in the wire of the loop.

Generally the usual depth of first watering in crop field is required as: a) 3" inches in a ploughed field b) 9" inches in a ploughed field c) 12" inches in a ploughed field d) 1" inches in a ploughed field

A person with a Class C drivers license may operate

A conducting spherical shell having an inner radius of 3 cm and outer radius of 4.3 cm carries a net charge of 9.6 μC. A conducting sphere is placed at the center of this shell hav - ing a radius of 0.8 cm and carries a net charge of 1.7 μC.

Rubber bushings are used on suspensions to A. separate parts B. permit necessary movement C. cushion parts and reduce vibration and noise D. All of the above

Consider five wireless stations A, B, C, D, E. Station A can communicate with all other stations. B can communicate with A, C, E. C can communicate with A, B, D, and D can communicate with A, C, E. Also E can communicate with A, D, B.

tech A says that a Hall-effect sensor can be used in an electronic ignition system. Tech B says that an optical-type sensor can be used in an electronic ignition system. Who is correct