PHYSICS HIGH SCHOOL

Anyone get this if you do please help me step by step

Answers

Answer 1

Answer:

Answer:

$7.95

Explanation:

$5.75 cost per bag ÷ 47 apples = unit cost of $0.1223. thus, each apple cost $ .1223.

.1223 × 65 apples= $7.95

note_rounding apples to .12*65=$7.8

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A car traveling in a straight line has a velocity of 3.79 m/s at some instant. After 5.4 s, its velocity is 11.9 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2

Answers

|Acceleration| = (change in speed) / (time for the change)

Change in speed = (speed at the end) minus (speed at the beginning).

Change in speed = (11.9 m/s - 3.79 m/s) = 8.11 m/s

|Acceleration| = (8.11 m/s) / (5.4 sec) = 1.502 m/s² (rounded)

This solution is written in terms of speed and the absolute value
of acceleration. The question gives no information regarding the
direction of motion at any time, so it's not possible to say anything
about velocity, or the direction of acceleration.

How would I calculate the X from a known velocity when launching a ball off a table?

Answers

Here are the steps you would need to follow:

#1). Define what 'the 'X is, and how it's related to the ball.
#2). Be clear on how 'the X' is related to the 'known velocity'.
#3). Identify how the 'known velocity' is related to the action of the ball when it's launched.

With this information in front of you, you'll have a much better chance
of answering the question.

With none of it in front of me, I have no chance at all.

Use the equation:

$X=ut+ (1)/(2) at^(2)$
where u is the initial velocity, a is the acceleration downwards (in this case $a=g=9.81m s^(-2)$ )

Hope this helps :)

A charge of +1.4 × 10Ò coulombs moves from point A to B. What is the potential difference between the two points if the work done on the charge is +3.4 × 10¥ joules?

Answers

The exponents in both data quantities needed to calculate the answer have been corrupted and misprinted, so no answer is possible. Proofreading was REALLY needed for this one, but alas . . .

When an explanation to a problem is accepted as always true, it isa. law theory hypothesis fact?

Answers

Answer: law

Explanation: A law is a rule that is used to explain the observation of a body. It could be represented in form of verbal or mathematically.

when the answer is considered as always true under every condition tested, it becomes a law that would be used to know other variables.

I believe the best answer is law, as scientific laws are accepted to be true under the proper conditions.

You have a cylindrical balloonship with the mass of 25 000kg, how should I calculate the airfriction on it's speed?

Answers

That is some advanced aerodynamics you have there.

You'll need to know at least the dimensions of the whole ship, and
the coefficient of friction between air and whatever material the bag
is made of. I don't think the total mass is going to be too important.

The atmosphere has many roles, including:

Answers

There are five layers of the atmosphere and these are; troposphere, stratosphere, mesosphere, thermosphere and exosphere. The first layer, troposphere, is where we are able to do most of our activities. This is where we can see the formation of clouds, the production of rain, hail, snow and other weather phenomenon. Also, this layer is where the greatest amount of air pressure because most of the molecules of air are in this area. Like us, air has also mass and the pressure is brought down by the earth’s gravity causing an increase in weight exerted on you as you descend lower into the atmosphere. So, as you enter into the other layers of atmosphere above the troposphere, the air pressure starts to decrease. Below the atmosphere is the hydrosphere. This is where all liquid forms are located. And since the seawater has a greater mass than air, it has the greatest pressure.

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