What simple machines would move or turn an object?

Question 3 options:

wheel and axle

lever

screw

wedge

4. A see-saw is an example of what type of lever?

Question 4 options:

First Class

Second Class

Third Class

Fourth Class

Four students are asked to find the mass of a mineral using a calibrated balance. The results were as follows. 16.009g 15.780g 16.110g and 15.990g the known mass of the mineral is 16.100g which student's result was most accurate?

The speed of a sound wave traveling through air is 400 meters per second. the wavelength of the wave is 25 meters. what is the frequency of the wave

How are commets pushed out of the oort cloud

A sky diver steps from a high-flying helicopter. If there were no air resis - tance, how fast would she be falling at the end of a 12-second jump?

Use the word contact force in a sentence.

An example of objects the move in revolution

How many hops does a kangoroo do in 1 day

What are the average velocity and average acceleration of the tip of a 2.4 cm long hour hand of a clock?

What is the number one and most important rule to remember in soccer?

Why are convection currents; why are they hotter and colder parts of earth