PHYSICS HIGH SCHOOL

A suitcase (mass m = 18 kg) is resting on the floor of an elevator. The part of the suitcase in contact with the floor measures 0.50 m × 0.15 m. The elevator is moving upward with an acceleration of magnitude 1.6 m/s2. What pressure (in excess of atmospheric pressure) is applied to the floor beneath the suitcase?

Answers

Answer 1

Answer:

Answer:

P=2736 Pa

Explanation:

According to Newton we have that:

∑ $F=m*a\n$

A force is exerted by the elevator to the suitcase, according to 3th Newton's law an equal force but in the opposite direction will appeared on the suitcase, that is:

∑ $F=m*g+m*a=m*(g+a)$

$F=205.2N$

We know that the pressure is given by:

$P=(F)/(A)\nP=(205.2N)/((0.50m)*(0.15m))\nP=2736N/m^2=2736Pa$

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Distance measurements based on the speed of light; used for objects in space

Answers

Answer : Yes, distance measurements based on the speed of light used for objects in space.

Explanation : A light year is measurement of distance that light travel in a one year.

In a one year light travels 9460000000000 kilometer.

We know that, speed of light is $3*10^(8)\ m/s$

and time is 31536000 seconds in 1 year

so, distance= speed of light X time

Now, the light year is $9.4608*10^(15) meter$

Example : The nearest star to earth is about 4.3 light year away.

Alpha particles \ beta particles / gamma radiation Put these different types of radiation in order from MOST to LEAST penetrating.

Answers

It goes: Gamma radiation > beta particles > alpha particles

Answer:

Gamma > Beta > Alpha

Explanation:

Air flowing from the equator to the poles rises and falls in looping patterns. What are these patterns called?A. The Coriolis Effect
B. Convection Cells
C. Emanation Cells
D. Radiation

Answers

These patterns are called

B. Convection Cells

What are Convection Cells?

The equatorial region receives the maximum amount of sunlight as the sun is directly above it. Due to this, the earth experiences a higher temperature, as a result of which the air in this region becomes warm and less dense. It then slowly rises up towards the upper atmosphere, forming a low pressure zone. This air when rises up, slowly cools, and after sometime it falls back. This continuous motion of air mass creates convection cells in the atmosphere.

Thus, the correct answer is option (B).

Find more information about Convection cells here:

brainly.com/question/1024190

The correct answer for the given question above would be option B. Air flowing from the equator to the poles rises and falls in looping patterns and these patterns are called convection cells. Convection cells is an important process in the formation of landforms and the movement of winds. Hope this answers your question.

If a car travels 60 mi. north for one-half hour, 100 mi. west for one hour, and 60 mi. south for 30 minutes, what is the total displacement of the car?100

220

0

Is The direction N, S, E, W, or N/A

Answers

The first and the last segment ... 60 mi north and 60 mi south ... canceled
each other. The only segment left is the 100 mi west, so that's the overall
displacement ... 100 miles west. The times don't matter at all.

I would say that the total displacement of the car would have to be in the Westward direction.

Calculate the average force that must be exerted on a 0.145 kg baseball in order to give it an acceleration of 130 m/s2.

Answers

Answer:

F = 18.9 N

Explanation:

m = 0145 kg

a = 130 m^2

F = ma = (0.145kg)(130m/s^2) = 18.9N

At t = 0, a battery is connected to a series arrangement of a resistor and an inductor. At what multiple of the inductive time constant will the energy stored in the inductor's magnetic field be 0.565 its steady-state value?