PHYSICS HIGH SCHOOL

If The dimensions of a brick that weighs 25N are 0.19m x 0.07m x 0.095m. What pressure does the brick exert on the ground if it is resting on its largest face?

Answers

Answer 1
Answer: 1 newton per square meter = 1 pascal of pressure.

The largest face of the brick is (0.19 x 0.095) = .01805 square meter

25N/0.01805 = 1,385 newtons per square meter = 1,385 pascal  = 1.385 kPa

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Tarzan swings on a 31.0 m long vine initially inclined at an angle of 36.0◦ with the vertical. The acceleration of gravity if 9.81 m/s 2 . What is his speed at the bottom of the swing if he a) starts from rest? Answer in units of m/s

A bicycle and rider travel along a road. Which is true?A. The bicycle and the rider undergo translation.
B. Only the rider undergoes a translation.
C. Only the bicycle undergoes translation.
D. Neither the bicycle nor the rider undergoes a translation.

Answers

Answer:

A. The bicycle and the rider undergo translation.

Explanation:

When a rider is riding his bicycle along the road, the wheels of the bicycle will rotate. This rotation of wheels translates both the rider and the bicycle in space.

So the correct answer is option A
A bicycle and rideer travel along a road. the true about the sentence is: a. the bicycle and the rider undergo translation. The rider moving because you have to push the pedals and make the bike moves too.

hope this help

Convert 0.000238 m to cm

Answers

Answer:

0.0238 centimetre

Explanation:

multiply the length value by 100

What happens when a wave reflects?a. They are absorbed by the object they hit.
b. They travel through the object they hit.
c. They bend when they hit the medium.
d. They bounce off the object they hit.

Answers

they bounce off just like sun rays when they heat the atmosphere they bounce off reflection

An object is in uniform circular motion, tracing an angel at 30 degrees every 0.010 seconds. What's the period of this motion and how do I work it out?

Answers

Here's the rule you need to know
in order to answer this question:

                     1 full circle ==> 360 degrees .

Got that ?

Now you could set up a proportion:

     (30 degrees) / (0.01 second)  =  (360 degrees) / (time for full period)

Cross-multiply the proportion:

     (30°) · (period)  =  (360°) · (0.01 sec)

Divide each side by (30°) :    Period = (360° · 0.01 sec) / (30°)

                                                     =  (3.6° · sec) / (30°)

                                                     =  (3.6 / 30)  sec

                                                     =      0.12  sec .
___________________________________

Another way to look at it:

30°        takes    0.01 second
60°        takes    0.02 second
90°        takes    0.03 second
120°      takes    0.04 second
150°      takes    0.05 second
180°      takes    0.06 second
210°      takes    0.07 second
240°      takes    0.08 second
270°      takes    0.09 second
300°      takes    0.10 second
330°      takes    0.11 second
360°      takes   0.12 second

Every 4 years we have a leap year on our calander to make up the extra.......

Answers


The Earth takes very nearly (365 and 1/4) days to go around the sun.

If our calendar always had 365 days, then the year would end and re-start
too soon, and the beginning of Spring (and every other season) would
eventually drift into the months after March.

If our calendar always had 366 days, then the year would end and re-start
too late, and the beginning of Spring (and every other season) would
eventually drift into the months before March.

We can't make calendars with an extra quarter-day in each year.  But we
keep them lined up with the real year by saving up the quarters, and adding
one full day to the calendar every 4 years.

What is the advantage of combining carbon from coal with steel?

Answers

The role of Carbon in steel is to increase hardness and tensile strength as well as response to heat treatment (hardenability). Increased amounts of carbon also reduces weldability. It is usually present to up to 2% carbon.
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