If a piece of space debris is too large to be a meteoroid and too small to be a planet, it could be

A. a meteor

B. an asteroid

C. a meteoroid

D. a star

A 4.0 W LED bulb produces 240 lumens. What is the efficacy of the bulb? 1. 1.7 lm/W 2. 60 lm/W 3. 236 lm/W 4. 244 lm/W

A combustion reaction occurs when a substance reacts quickly with

A petrol engine that transforms 1000J of chemical potential energy into 300J of kinetic energy, and 700J into wasted heat and sound energy. Calculate the Efficiency. Tysm ppl

The vibration produced days or even years before an earthquake

Where do bobcats live?

Compare and contrast how wind and glaciers abrade rock

An object of mass 10 kg is accelerated upward at 2 m/s squared. what force is required?

How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules and kilocalories.

Arrange the objects in order from least to greatest potential energy. Assume that gravity is constant. (Use PE = m * g * h.

No physical processes have ever been demonstrated which provide a mechanism for the universe to assemble itself. True False