Sometimes scientists make a mistake, or ___, and need to do the experiment again?

What is the speed of a wave on a string with a wavelength of 1.75 m and a frequency of 2.0 Hz

Materials such as oil and gas are used as fuel because they have what chemical property?

A 235-kg crate is pushed horizontally with a force of 791 n. if the coefficient of kinetic friction is 0.25, calculate the acceleration of the crate.

What is the electric flux through the surface a1 that encloses all three objects?

If energy seems to disappear what actually happened to it

Which of the following is an example of applied research?

A Cadillac Escalade has a mass of 2,569.6 kg, if it accelerates at 4.65 m/s^2 what is the net force on the car?

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?

A car travels 300 km in the first 3 hours of a trip. Then it hits traffic and travels only 60 km during the last hour. What is the average speed of the car? a.) 180 km/h b.) 100 km/h c.) 90 km/h d.) 120 km/h

What is the purpose of using a wedge? A. separates objects B. keeps objects together C. allows you to exert force over a distance