What is the definition of luminosity

An organism that obtains organic food molecules by eating other organisms or their by-products

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

According to the Hooke's law formula, the force is proportional to what measurement? the length of the spring the mass of the spring the displacement of the spring the period of the spring

Why does a ice cube metl when held in a person's hand?

Suppose the Solar radiation is 850 W/m2 and you collect 20% of energy that falls on the reflecting surface of a hot dog cooker. If you need 240 watts for the cooker, what is the minimum collector area?

you often hear people particularly TV announcers talk about "high rate of speed" what do you think they mean according to the specifics of physics definitions what are they really saying

What is the value of x in the equation Ix - 3y = 30, when y = 15?

32. How much work is done pushing an 80 N box 2 m across ue surtout What work is done? a. 40 J c. 160 J b. 20 J d. 240 J

Which is a resource that the National Park Service manages? A. memorials B. wildlife refuges C. ecosystems D. endangered species

Write two examples (mathematical expression) of physical laws that change inversely with the square of the distance.