What type of friction is using chalk in the summer to draw on the ground in Copley square?

Sliding friction

Rolling friction

static friction

Fluid friction

What is atom in science

A wave has a speed of 50 m/s and a frequency of 10 Hz. Calculate its wavelength.

You have an old style reel lawn mower at home. No engine! You need to cut the grass but also finish in time to watch your favorite Tv show. How would you apply Newton's second law of motion here?

A lightbulb has an efficiency of 8.2%. How much light energy (not heat energy) is generated by the bulb every second if the bulb has a power of 21 W?

How do oceans prevent global warming? a. by increasing the amount of oxygen in air b. by absorbing atmospheric carbon dioxide c. by changing carbonates into carbon dioxide d. by heating the equator and poles unequally

Which describes a property shared by ultraviolet light and X-rays? A They are both transverse waves. B They share the same wavelength. C They contain less energy than visible light. D They both require a medium to travel through.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a