Chemistry, 05.06.2020 04:57 bricquan10
Kick a ball and it'll fly up into the air before falling back down to the ground. A force is a pushing or pulling action that can make things move, change direction, or change shape. Which of these is NOT a force acting on the football?
A) The force of gravity is pulling the ball back to the ground.
B) Kicking the ball applies a force that sends it into the air.
C)The force of gravity sends the ball sailing through the goal post.
D)As the ball rolls across the ground, the force of friction brings it to rest.
Answers: 1
Chemistry, 22.06.2019 08:00
Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.
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Chemistry, 22.06.2019 19:00
How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next
Answers: 1
Chemistry, 22.06.2019 23:00
Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]
Answers: 1
Chemistry, 23.06.2019 04:31
Chemical engineering who specializes in negotiating for large purchases and instructing customers in use of the products are
Answers: 1
Kick a ball and it'll fly up into the air before falling back down to the ground. A force is a pushi...
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