How can you see a unicellular organsim

A teacher stands well back from an outside doorway 0.88 m wide, and blows a whistle of frequency 780 Hz. Ignoring reflections, estimate at what angle (s) it is not possible to hear the whistle clearly on the playground outside the doorway.

What type of energy is produced by the movement of electrons? Select one: a. Chemical energy b. Electrical energy c. Nuclear energy d. Radiant energy

Profit equals the total amount of money made minus

A 56 kg skier starts from rest at the top of a 1200-m-long trail which drops a total of 170 m from top to bottom. at the bottom, the skier is moving 13.0 m/s.

Which group was guaranteed voting rights by the Fifteenth Amendment? A. women B. soldiers C. African Americans D. 18 year olds

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.