Question 1 (3 points) Question 1 Unsaved Scientists are expected to publish thei

Question

Question 1 (3 points) Question 1 Unsaved Scientists are expected to publish their work in public science journals, exposing it to sometimes harsh criticism from other scientists. Which of the following is not a reason for this "peer review" process? Question 1 options: To ensure honesty in science. To make results publicly available to other scientists. To allow other scientists to find possible mistakes in the work. To allow journal editors to filter out scientific results that might contradict the work of prominent scientific authorities. Save Question 2 (3 points) Question 2 Unsaved You throw a brick straight up. Ignoring air resistance, the force acting on the brick after it leaves your hand will... Question 2 options: a) point downward, pulling with constant strength as the brick rises and falls, except at the brick's maximum height, where it momentarily equals zero. b) point downward, gradually diminishing to zero at the ball's maximum height and then increasing as it falls again. c) point upward as it rises, diminish to zero at the ball's maximum height, after which the ball will experience only the downward force of its weight. d) point downward with constant strength as the brick rises and then falls. Save Question 3 (3 points) Question 3 Unsaved Which of the following devices on a car can be used to cause the car to accelerate? Question 3 options: a) The gas pedal b) The brake pedal c) The steering wheel d) All the above Save Question 4 (3 points) Question 4 Unsaved A child in skates is on the surface of an iced-over lake. You give the child a push. After you stop pushing her, the child continues to move across the surface of the lake. What is keeping the child moving? Question 4 options: a) Willpower. b) The child's inertia. c) The ice must be pushing the child forward. d) Gravity is pulling the child along the lake surface.

Explanation / Answer

1)
Which of the following is not a reason for this "peer review" process?
Correct option :- To ensure honesty in science.

2)
Force acting = m*a
Well acceleration in this case will allways be = acceleration due to gravity = g,
So F = m*g (Downward Allways)

Correct option :- d) point downward with constant strength as the brick rises and then falls.

3)
Which of the following devices on a car can be used to cause the car to accelerate?
Engine needs gas to work and as we hit the gas pedal more gas flows into the engine, so it accelerates.
Correct option :-  a) The gas pedal.

4)
What is keeping the child moving?
According to Newton's Law of motion, An object at rest stays at rest and an object in motion stays in motion with the same speed.
Correct option :- b) The child's inertia

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