8 Grade Science

Explain how a Lava lamp demonstrates convection currents.

The windchill index tells you A. how wind and temperature affect your body in winter. B. the temperature of the water during winter. C. how wind speed affects heating needs for structures. D. the amount of moisture in the air.

What is the entropy change associated with the expansion of one mole of an ideal gas from an initial volume of v to a final volume of 5.50v at constant temperature?

Dock walls sometimes have pillars replaced with rubber car tyres. explain how this reduces the possibility of damage what a boat docks

What is the total current I flowing through a system with two resistors in parallel with resistances of 2Ω and 5Ω, and a battery with potential difference of 10V?

Whick of the following is an advantage for a single celled organism (A it can become very large) (B it can reproduce quickly) (C it does not have to maintain its structure) (D it can tolerate all the environmental conditions)

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet