Suppose a bird takes off from a tree and flies in a straight line. It reaches a speed of 1o miles per second. What is the change in the bird's velocity?

Which statement is true for one molecule of sulfur trioxide? there are three atoms of sulfur and one atom of oxygen. there are three atoms of sulfur and three atoms of oxygen. there is one atom of sulfur and one atom of oxygen.

A ball is dropped from the top of a building. When does the ball have the most potential energy?

If the temperature increase, the rate of chemical reaction also increase because the particles start moving faster. If the surface area increase, the rate if chemical reaction also increases because the chances of the collision become more.

Ellen needs to move a heavy box across the floor and then place it on a shelf that is four feet above the floor. Which use of machines would most likely require the least amount of force in order to get the box on the shelf? A.

Explain why Newton's first law of motion can be difficult to observe in moving objects?

A circuit with a current of 400 amp has several lights that have a total resistance equal to 30 ohms. Find the voltage.

How many neutrons does element x have if it's atomic number is 35 and it's mass number 71

The potential difference between the terminal of an electrical heater is 60v when it draw a current 4A fron the source. What current will the heater draw if the potential difference is increased to 120v?

Which answer choice best explains why nuclear reactions release more energy than chemical reactions? Electrostatic forces of repulsion are thousands of times stronger than gravitational forces.

A train's mass is 18181.81 kg. What is its weight?