In a pig-calling contest, a caller produces a sound with an intensity level of 60 db. how many such callers would be required to reach the pain level of 120 db? 2 incorrect: your answer is incorrect.

A spherical bowling ball with mass m = 3.4 kg and radius R = 0.113 m is thrown down the lane with an initial speed of v = 8.1 m/s. The coefficient of kinetic friction between the sliding ball and the ground is μ = 0.31.

During a biology lab, students use a small knife called a scalpel to examine a large cricket. One student is accidentally cut by the scalpel.

Using a movable pulley system will decrease the force needed to lift the car by increasing the

Consider two planets, a and b, orbiting a distant star. planet b orbits twice as far from the star as planet a does. how does planet b's orbital period compare to planet a's?

Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose that you visit that place (just suppose) and throw a rock. What will the rock do? Why?

California has been spending money to establish desalination plants. The state is preparing for

What force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2? A. 0.25 N B. 49 N C. 196 N D. 748 N

When two or more pure substances are blended together the result is a?

10 PTS. A resistor has a value of 2.2 x 10⁵ Ω ± 20%. What is the range of possible values for this resistor?

Describe 3 uses of radioactivity isotopes