Which of the following can be caused by lightning or arson?

Hurricanes

Storm Surge

Tornadoes

Wildfires

How does the matter and energy in a system naturally change over time?

Consider the three following statements that concern two observers who are moving along the same line at different constant speeds with respect to an inertial frame. Which of them are true? A.

A piano tuner stretches a steel piano wire with a tension of 765 n. the steel wire has a length of 0.900 m and a mass of 6.75 g. part a what is the frequency f1 of the string's fundamental mode of vibration?

Two 2.5 kg physical science textbooks on a bookshelf are 0.14 m apart. What is the magnitude of the gravitational attraction between the books?

A team of dogs is pulling a sled with a net force of 2000 N. The sled is accelerating a 2.2 m/s^2. What is the mass of the sled?

A friend asks you how much pressure is in your car tires. You know that the tire manufacturer recommends 30 psi, but it's been a while since you've checked. You can't find a tire gauge in the car, but you do find the owner's manual and a ruler.

What lead does to X rays?

A lab technician uses laser light with a wavelength of 650 nm to test a diffraction grating. When the grating is 40.4 cm from the screen, the first-order maxima appear 6.09 cm from the center of the pattern.

One of the reasons the metric system is easier to use is that it uses fractions it is a decimal system you don't need to know any math to use it it was invented in the United States

Which of the following are appropriate acceleration units? km/hr2 m/s/s ft/s miles/hr/min sec/km/m