How could a person easily tell which envelope contained four sheets of paper and which contained five sheets without opening the envelopes what assumption did you make in arriving at your answers

List the number of atoms for each element in this compound: / (H_{2} SO_{4}/)

Suppose an object moves along the y axis so that its location is yequals= f (x) equals=xsquared2plus+x at time x (y is in meters, x is in seconds).

The similarity between velocity and speed

Which factor should be included in a model of energy flow into the atmosphere? a. places experiencing drought b. variations in local temperatures c. concentrations of greenhouse gases d. number of flood days per year

Write code to add two numbers, 5 and 7. Then display the sum on the serial monitor.

Tarzan runs at 6 m/s and grabs a vertical vine (negligible mass) 4.1 m long which is tied to a tree at the top. Tarzan swings up. Determine the maximum height Tarzan will swing up and the angle the vine makes respect to vertical.

What is the safest place to be amid the coronavirus?

What is the change in internal energy if 60 J of heat are added to a system and the system does 40 J of work on its surroundings? Use AU = Q-W.

A 35-N bucket of water is lifted vertically 3.0 m and then returned to its original position. How much work did gravity do on the bucket during this process?

You then decide to throw another disc to your friend in the tree for fun. If you throw the disc at a speed of 10 m/s and your friend catches it 5.0 m above you, what was the speed of the disc just before your friend catches it