john is trying to measure the pressure acting on a square platform. He has placed a mass of 20 kg on the disk and he measures the length of one side of the square as 15 cm. What is the pressure john should measure?

Motion combines the concepts of position change (length) and time. Which of the following combination of units is used to describe the velocity of a moving object? length x time length/time Length/time^2 time/length

Can two parents with brown eyes have a blue eyed baby

A high-intensity portable lantern is powered by several batteries that are connected in series. The lantern's bulb uses 86 W of power, while the current in the lantern is 3.0 A.

Chromium, calcium, and potassium are near each other on the periodic table and have some common characteristics but differ in chemical reactivity. Which lists these metals in order from most reactive to least reactive?

Which of the following is released by trees into the atmosphere? carbon dioxide nitrogen oxygen ozone more tha one answer

Which is the correct order from the closest to the sun to the farthest away from the sun? A. terrestrial planets, asteroid belt, gas planets, Kuiper belt B. gas planets, asteroid belt, terrestrial planets, Kuiper belt C.

Ethylene (C2H4) reacts with oxygen gas to produce carbon dioxide and water. 45.0 grams of ethylene reacts, how many grams of carbon dioxide gas will be produced?

What causes ice to melt and water to boil

A block of mass 3.5 kg slides down a frictionless inclined plane of length 6.4 m that makes an angle of 30 degrees with the horizontal. if the block is released from rest at the top of the incline, what is its speed at the bottom

What is the wavelength of an earthquake wave if it has a speed of 5 km/s and a frequency of 10 Hz?