A Cannon shell is fired straight up from the ground at an initial speed of 225 m/s. after how much time is the shell at a height of 620 m above the ground and moving down.

What force do you need to exert on the rope if you want to pull the box at constant speed?

Item 4 The identity of an element depends on the number of

A 2.0 newton book falls from the top of a 1.0 meter high table. What is the book's kinetic energy when it hits the floor? (1) 1.0J (2) 2.0J (3) 10J (4) 20J Show calculations

5400 J of energy are given off when a 50 g of aluminum pan changes temperature. Does the Temperature of the pan increase or decrease and by how much?

1. What is the speed of sound in air that has a temperature of 90.0 °C?

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?

What is the use of scientific knowledge and research for an action

How do evaporation and condensation relate to heat

Resistance = 0.1 ohm Current = 60 amps Voltage = ? 0.6 6 60 600

The velocity of a roller coaster as it moves down a hill is where v0 is the initial velocity and h is the vertical drop in feet. An engineer wants a new coaster to have a velocity of 90 feet per second when it reaches the bottom of the hill.