From which of these following we can hear the sounds

1) solid

2) liquid

3) gases

4) all of these

Suppose you have an unknown clear substance immersed in water, and you wish to identify it by finding its index of refraction. You arrange to have a beam of light enter it at an angle of 45.7∘, and you observe the angle of refraction to be 30.5∘.

An automobile moves with a tangential speed of 50.0m/s around a circular track with a 3200.0m diameter. What is the magnitude of the angular speed of the car?

Tillage can release pollutants in the soil and increase erosion. decrease erosion. promote soil compaction. promote fertilizer retention

In terms of impulse and momentum, why are padded dashboards safer in automobiles?

Two capacitors C1 and C2 are charged to 120V and 200V respectively. It is found that by connecting them together the potential on each one can be made zero. Then what is the relation between C1 and C2

Fusion occurs with atoms of elements less massive than a. iron. b. helium. c. calcium. d. uranium.

Which describes what happens when fuel is ignited in a heat engine? A. Chemical energy is converted into thermal energy B. Thermal energy is converted into solar energy. C. Solar energy is converted into chemical energy D.

What happens during the intake and compression strokes of a four stroke engine?

Which of the following is a protection provided by the layers of Earth's atmosphere? (AKS4a DOK2) * A. Increasing the Sun's harmful UV rays reaching living things on Earth B.

Whats a similarity between distance and displacement