4

The diagram shows a girl lifting a box of welght 50 N from a low shelf to a high shelf.

high shelf

low shelf

11.8m

50N

0,6 m

How much work is done on the box?

A. 30J

B. 60J

C. 90J

D. 120J

Hat can be found by counting the number of thoughts per second in a wave diagram

What elements are bridges exposed to yearly?

If you transfer a one liter of lemonade into a 2 liter pitcher and the lemonade fills up half the container. Does the density of the lemonade change?

Terry is convinced that heating peanut butter will increase its mass so that it covers more bread. Is he correct? A. No, mass is only equal to temperature B. No, heating matter does not affect mass C. Yes, mass is directly relates to temperature D.

Does riding a bike up a hill in higher gear burn more calories than a lower gear

When a car turns a corner on a level road, which force provides the necessary centripetal acceleration? 1) gravity 2) normal force 3) air resistance 4) tension 5) friction

Use Newton's universal law of gravitation to explain why gravity is greater on Earth than on Mercury.

What is a magnetic field and how does it interact with magnetic materials?

What is significant about holden sitting on the radiator?

Which of the following occurs in meiosis that does not occur in mitosis 1 fertilization occur 2 body cells are made 3 sex cells are made 4 cell division occurs