Which of these quantities needs to have a direction associated with it? Select one: a. force only b. force and acceleration c. mass only d. acceleration only

The output work of a machine compared to the input work is the efficiency of the machine.

Using the following information to determine the young's modulus for the unknown material, the radius of the material is 4 cm. while gravitational acceleration g=10m/s? initial length (cm) 25 final length (cm) 25.7 mass (gm) 200

A sound wave travels through water. What best describes the direction of the water particles?

When Javier touches a hot mug of tea, energy is transferred from the surface of the mug to his hand. What kind of energy is this? nuclear radiant thermal chemical

What is the internal heat gain, in kW, from a factory with 20 kW of lighting (surface-mounted), 10 kW of running motors, and 10 people doing light benchwork?

Which Earth system spheres are involved in this particular scientific investigation on hydraulic fracturing? Choose one or more: a. biosphere b. atmosphere c. hydrosphere d. cryosphere e. geosphere

A particle with a charge of 33 μC moves with a speed of 74 m/s in the positive x direction. The magnetic field in this region of space has a component of 0.41 T in the positive y direction, and a component of 0.86 T in the positive z direction.

While floating in space a 100.-kg robot throws a 0.800-kg wrench at 12.0 m/s toward its human partner working on the spaceship. How fast will the robot recoil?

What is the order of magnitude of the speed of light

A car is going 60.0 mi/h and has to stop in 6.0 seconds. What is the car's acceleration?