Calculate the average speed (in km/hr) of Charlie whonruns to the store 4 km away in 30 minutes

What would you need to do to a wavelength to produce a higher frequency?

I'm kinda confused, I understand what came first in the formation but how do we know which part came first in the formation of our solar system?

How do weathering process affect deserts?

If you bake a cake in the oven in your kitchen, you can feel the warmth of the oven if you stand next to it. This is an example of

A 2100 kg car starts from rest and accelerates at a rate of 2.6m/s^2 for 4.0s. Assume that the force acting to accelerate the car is acting in the same direction as its motion. How much work has the car done?

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?

True or false All forces are different; each exerts a particular type of effect on a object

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.

A ___ is awarded to the opposing team when that team violently or dangerously charges a opponent. (in soccer) A) Goalie kick B) Indirect kick C) Direct kick D) Throw in