A wooden box weighing 150 N is sliding at a constant rate over a concrete sidewalk. The force required to pull the box at a steady rate is 78 N. What is the coefficient of friction?

1.9

228

72

0.52

Why do hydrogen and oxygen bond?

A 650-n force is exerted on the 65 kg crate. if the coefficient of kinetic friction is. 18 calculate the acceleration of the system and the force that each crate exerts on the other.

Which piece of playground equipment could be used to model and explain the movement of matter in the biosphere

What is the difference between covalent and ionic?

Suppose you have two resistors, R1 and R2, connected in series to a power source of voltage V, and that the resistor R2 has a much higher resistance than R1. Which of the following statements are true? Select one or more: a.

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

Echolocation is an acoustic principle in which some wildlife use resonance to find food at night. Question 25 options: True False

Use the drop-down menus to identify the variables for the second hypothesis. Hypothesis #2: As you build circuits, you will alter resistance, which is the y variable.