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A 0.5 kg block of aluminum (specific heat capacity = 900 J/kg·°C) is heated from 20°C to 80°C using a 2.0 kg container of water (specific heat capacity = 4186 J/kg·°C) initially at 25°C. Assume no heat is lost to the environment. A 1000 J heat source is applied to the aluminum block. Calculate the temperature increase it causes.

Use the quadratic formula to solve the equation. (All solutions are real numbers.)4n2 = -12n – 3

A heat pump is used to heat a home during the winter. The heat pump extracts heat from the outside air at a temperature of -5 degrees Celsius and delivers it to the inside air at 20 degrees Celsius. The heat pump operates with a coefficient of performance (COP) of 3.5. Calculate the amount of heat extracted from the outside air per second. (In kW)

Which of the following waves is an example of a longitudinal wave?

Programmed cell death (apoptosis) occurs _______

A heat pump is used to heat a home during the winter. The heat pump extracts heat from the outside air at a temperature of -5 degrees Celsius and delivers it to the inside air at 20 degrees Celsius. The heat pump operates with a coefficient of performance (COP) of 3.5. If the heat pump is upgraded to a COP of 4.0 while delivering the same amount of heat energy, calculate the new electrical power required. (In kW)

The somatic nervous system and the autonomic nervous system are both branches of the motor (efferent) division of the nervous system. Which of the following statements describes how the somatic and autonomic nervous systems differ?

A simple pendulum is 2.5 meters long and is set into motion. Assume the pendulum swings at a small angle in a place where gravitational acceleration is . Calculate the frequency of the pendulum’s oscillation.

The speed of a pressure wave in a pipeline is faster for saltwater than fresh water.   

To avoid cavitation in a pump, one of the few items that a designer has control over is the