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gulaghasi [49]
3 years ago
6

What s physics?

Physics
2 answers:
Alex777 [14]3 years ago
7 0

The answer is (B. The study of Matter and Energy) but technically you could consider physics all of these as engineering is based on physics and that would be the study of inventions, chemistry and biology were both discovered because of physics, and physics invokes more math than any other subject as it applies math to the entire Universe.

Montano1993 [528]3 years ago
6 0

The study of matter and energy is physics.

Answer: Option B

<u>Explanation:</u>

Physics is the study of events related to mater and energy. The earth is composed of matter which when reacts forms and releases energy.

Mathematics is the study of calculations and fundamental calculations on arithmetic expressions, whereas chemistry deals with the reaction between two substances. Inventions happen in various fields and therefore it is not particularly restricted to the area of physics alone.

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How much heat is required to convert 500g of liquid water at 28°C into steam at 150 °C? Take the specific heat capacity of water
storchak [24]

Answer:

Q = 1.404 × 10^(5) KJ

Explanation:

We are given:

Mass;m = 500 g = 0.5kg

Temperature 1;T1 = 28 °C

Temperature:T2 = 150 °C

Specific heat capacity;c_p = 4183 J/Kg °C

Latent heat of vaporization;L = 2.26 × 10^(6) J/Kg.

The heat energy needed is given by;

Q = sensible heat energy + Latent heat

Formula for sensible heat is;

Sensible heat energy = mc(t2 - t1)

Formula for Latent heat is ;

Latent heat = mL

Thus:

Q = mc(t2 - t1) + mL

Q = m[c(t2 - t1) + L]

Q = 0.5((4183(159 - 28) + (2.26 × 10^(6)))

Q = 1.404 × 10^(8) J = 1.404 × 10^(5) KJ

6 0
3 years ago
PLEASE HELP BRAINLIEST + POINTS'
Semenov [28]

For this case we have that by definition, physical power refers to the amount of work done for a unit of time.

So:

P = \frac {W} {t}

Where:

W: It's the work

t: It's time

The power units are in \frac {Joules} {s} = Watts

So, according to the problem data we have:

P = 100W\\t = 120s

Clearing the work of the formula:

W = P * t\\W = 100 * 120 = 1200

Thus, the work is 1200 joules.

Answer:

Option C

8 0
3 years ago
What is Kinematics???​
Komok [63]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

The branch of mechanics which deals with the motion of an object without considering the cause of motion, is known as Kinematics ~

I hope it helps ~

6 0
2 years ago
Read 2 more answers
It has been suggested that rotating cylinders about 9 mi long and 5.9 mi in diameter be placed in space and used as colonies. Wh
mezya [45]

Answer:

\omega = 4.5\times 10^{-2} rad/s

Explanation:

Given data:

Rotating cylinder length = 9 mi

diameter of cylinder is 5.9 mi

we know that linear acceleration is given as

a =  r ω^2

where ω is angular velocity

so\omega = \sqrt{\frac{a}{r}}

r = \frac{5.9}[2} \frac{1609 m}{1 mi} = 4.746\times 10^{3} m

\omega = \sqrt{\frac{9.80}{4.746\times 10^{3}}}

\omega = 4.5\times 10^{-2} rad/s

7 0
2 years ago
A bike first accelerates from 0.0m/s to 4.5m/s in 4.5 s, the continues at this constant speed for another 6.0 s. What is the tot
Alex_Xolod [135]

Answer:

37.125 m

Explanation:

Using the equation of motion

s=ut+0.5at^{2} where s is distance, u is initial velocity, t is time and a is acceleration

<u>Distance during acceleration</u>

Acceleration, a=\frac {V_{final}-V_{initial}}{t} where V_{final} is final velocity and V_{initial} is initial velocity.

Substituting 0.0 m/s for initial velocity and 4.5 m/s for final velocity, acceleration will be

a=\frac {4.5 m/s-0 m/s}{4.5 s}=1 m/s^{2}

Then substituting u for 0 m/s, t for 4.5 s and a for 1 m/s^{2} into the equation of motion

s=0*4.5+ 0.5*1*4.5^{2}=0+10.125 =10.125 m

<u>Distance at a constant speed</u>

At a constant speed, there's no acceleration and since speed=distance/time then distance is speed*time

Distance=4.5 m/s*6 s=27 m

<u>Total distance</u>

Total=27+10.125=37.125 m

3 0
3 years ago
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