An amplifier has a 50 watt output and a 5 watt input. what is the gain in decibels for this amplifier, rounded to the nearest decibel?

Which is not a characteristic of life? movement adaptation growth reproduction

Earth can be modeled with five layers based on the strengths and physical properties of the materials in them. Put the layers in order, with the outermost surface of Earth on top. The two layers of the core have been lumped together here.

A major leaguer hits a baseball so that it leaves the bat at a speed of 30 m/s at an angle of 36.9° above the horizontal. The bat is at a height of 1.2 m when it hits the baseball. Ignore air resistance.

What do tire treads, rubber mats, automobile breaks, and tennis shoes have in common. -They reduce friction -they are lubricants -they increase friction -the reduce static electricity

Two spaceships are each traveling in a straight line at 0.95c. The first ship is moving directly toward the Sun. The second ship is moving directly away from the Sun. Observers on each ship measure the velocity of light coming from the Sun.

A refrigerator is a system. The energy input into the refrigerator system (in the form of electricity) is the same as the amount of energy output from the system. Which of the following best describes the energy output of the system?

A 1,120 kg car is travelling with a speed of 40 m/s. Find its energy.

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False