Which of the following best describes work being done by someone's arms?

a. a child building a sand castle

b. a mother holding a baby

c. a boy pushing on a tree

d. a traveler carrying luggage

Nearly all the visible light we see from the sun is emitted from the

Fuerzas que se aplican al mover una caja

A beam of light traveling in water (n = 1.33) encounters a boundary with another material. If the critical angle for total internal reflection is 81 degrees, what is the index of refraction of the other material?

A 225 kg red bumper car is moving at 3.0 m/s. It hits a stationary 180 kg blue bumper car. The red and blue bumper cars combine and hit a stationary green bumper car of mass 150 kg. The red, blue, and green bumper cars all combine. A. 0.93 m/s B 1.

At lunch, the babysitter gives Tanya and Damien each a chocolate candy. Tanya puts her candy on her plate. Damien saves his candy in his pocket. After lunch, Damien discovers his candy has melted.

Life cycle of a medium mass star

Use the periodic table to complete this equation that represents the process of nuclear fusion. Superscript 14 Subscript 7 Baseline N + Superscript 1 Subscript 1 Baseline H yields Superscript A Subscript B Baseline C

Josh rolled a bowling ball down a lane in 2.5 seconds. The ball travelled at a constant acceleration of 1.8 m/s/s down the lane and was traveling at a speed of 7.6 m/s by the time it reached the pins at the end of the lane.

How many meters of the rock wall eroded between 1910 and 1927?

As air temperatures increase, evaporation increases. Warmer temperatures also increase the capacity to absorb water vapor. More water vapor in the atmosphere accelerates the greenhouse effect.