Some dogs will get fleas on their bodies. The flea will feed on the dog. This might make the dog itch. Which animal is the host in this example?

A.) The flea

B.) the dog

C.) the dog and the flea

D.) neither the dog or the flea

In which item is energy stored in the form of gravitational potential energy

A spring with spring constant of 34 N/m is stretched 0.12 m from its equilibrium position. How much work must be done to stretch it an additional 0.062 m

Describe how the properties of water contribute to two of the following. Transpiration thermoregulation in endotherms plasma membrane structure

Name 3 devices or inventions which are designed to increase friction

Standing on the roof of a (42.0+A) m tall building, you throw a ball straight up with an initial speed of (14.5+B) m/s.

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

A weather balloon is inflated to a volume of 2.2 x 10^3 L with 374 g of helium. What is the density of helium in grams per liter?