How do you calculate percentage uncertainties?

Which scientific law states that matter cannot be created or destroyed? A. first law of nature B. Newton's first law C. universal gravitation D. conservation of mass

Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid. suppose a chunk of iron with a mass of 390.0 g in air is found to have an apparent mass of 350.5 g when completely submerged in an unknown liquid.

A frog is at the bottom of a 17-foot well. Each time the frog leaps, it moves up 3 feet. If the frog has not reached the top of the well, then the frog slides back 1 foot before it is ready to make another leap.

Which one of the following statements about sulfuric acid is correct

The United States, England, and Russia were members of the: Axis Powers Allied Powers Triple Entente

Why is the use of an international system of measurement important for science?

Would u do more lifting putting a box on the table or putting it on a shelf

Tia needs to produce a solenoid that has an inductance of 2.51 μ H. She constructs the solenoid by uniformly winding 1.19 m of thin wire around a tube. How long, in centimeters, should the tube be?

A 1,492.3-kg airplane travels down the runway. Each of its four engines provides a force of 1,447.5 N. Find the acceleration of the airplane, in m/s2. (Ignore friction.)

A 0.42 kg football is thrown with a velocity of 17 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.017 S. What is the force exerted on the receiver? Answer in units of N