Which of the following is a physical quantity that has a magnitude but no direction?

a. vector

b. scalar

c. resulant

d. frame of referance

Sound waves travel faster through air than through solids. trur or false

What holds atoms together in a molecule? A: dentity B: gravity C: physical bonds D: chemical bonds

How does the electrical force relate to the charge of an object? It is inversely proportional to the square of the charge. It is directly proportional to the square of the charge. It is inversely proportional to the charge.

Which pair does NOT have an electric force between them? a positive object and negative object Two positive objects. two neutral objects two negative objects

A car traveled 60 km in two hours, 84 km in the next one hour, and then 68 km in two hours before reaching its destination. What was the cars average speed? Rounded to the nearest whole number. A. 212 km/HR B. 42 km/HR C. 148 km/HR D. 1060 km/HR

An unknown material has a mass of 5.61 kg, and its temperature increases by 0.124°C when 1320 J of heat are added. What is the specific heat of the material? (Unit = J / (kg*C))

What is it called when your tv goes fuzzy?

A fiber-optic cable (n = 1.53) is submerged in water (n = 1.33). Predict whether light will be refracted or whether it will undergo total internal reflection if the angle of incidence is between 65° and 70°.

Which type of thermal energy transfer occurs mostly in fluids? insulation radiation convection conduction

What happens to frequency when an object is moving towards you?