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3 years ago

Which can give off more heat: a glass full of hot water, or a pitcher full of hot water that has the same temperature?

Physics

2 answers:

user100 [1]3 years ago

6 0

B is or answer because they are both the same heat

Drupady [299]3 years ago

3 0

A The glass of wine I can go off more heat or it’s neither of them can give off heat

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1. You and your forensics team are working a crime scene of a 19 year-old female who was found in the woods behind

Helga [31]

Answer:

You could conclude the 2nd fact

Explanation:

3 0

3 years ago

Select all the correct answers. a leaf falls through the air, floating as it falls. air resistance is visibly affecting the leaf

musickatia [10]

Surface area and Mass

When a leaf falls, it is being accelerated by gravity to the ground but opposed by air resistance also the drag. The net force on a leaf will therefore be calculated by subtracting its weight of the leaf from its drag.

<h3>What is Air resistance ?</h3>

Air exerts a force known as air resistance. When an object is travelling through the air, the force works in the opposite direction.

While a sports vehicle with a streamlined design will encounter reduced air resistance and experience less drag, the automobile will be able to move more quickly than a truck with a flat front.
The speed, area, and shape of the object passing through the air all affect air resistance. Air density and resistance are affected by altitude, temperature, and humidity. The resistance increases with speed and area, respectively.

Learn more about Air resistance here:

brainly.com/question/27965545

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5 0

2 years ago

In a laundromat, during the spin-dry cycle of a washer, the rotating tub goes from rest to its maximum angular speed of 6.7 rev/

Alexxandr [17]

Answer: 7.095 rev

Explanation: since the motion of the washer is of a constant angular acceleration, then Newton's laws of motion applies.

Recall that

ω = ω0 + αt

Where α = angular acceleration = ?

ω = final angular velocity = 6.7rev/s

ω0 = initial angular velocity = 0 rev/s

t = time taken =8.8s

Since the motion of the dryer starts from rest, ω0 = 0, we have that

ω = αt

6.7 = α(8.8)

α = 6.7/8.8

α = 0.76 rev/s²

This value α = 0.76 rev/s² is a constant value and it is the same all through the motion.

When the lid of the washer was lifted, the motion was of a constant deceleration.

Recall that

θ = ω0t + αt²/2

Where θ = angular displacement

Since the washer is now decelerating, the final velocity (ω= 6.7 rev/s) of the accelerating motion now because the initial velocity of the decelerating motion.

Hence ω0 = 6.7 rev/s, α = - 0.76 rev/s² ( negative sign to denote deceleration) and t = 16.5s

By slotting in the parameters into the formulae, we have that

θ = 6.7 (16.5) + (-0.76)(16.5)²/2

θ = 110.55 - 103.455

θ = 7.095 rev

3 0

4 years ago

Give your answer in SI units and to three significant figures. A train departs Station A to travel to Station B which is 1188 me

Nikitich [7]

Answer:

Average velocity will be 58.181 m/sec

Explanation:

Distance between station A and station B = 1188 meters

As the train starts from station A its initial velocity u = 0 m/sec

Final velocity is when it reaches at station B is 20 m/sec

Acceleration $a=2.41m/sec^2$

From first equation of motion $v=u+at$

20 = 0+2.41×t

t = 8.298 sec

Now from station train began to deaccelerate and finaly stop so final velocity v = 0 m /sec

Initial velocity u = 20 m/sec

We know that v = u+at

Deacceleration $a=1.65m/sec^2$

So 0 =20 -1.65×t

t = 12.12 sec

So total time = 8.298 + 12.12 = 20.419 sec

So average velocity $=\frac{total\ distance}{total\ time}=\frac{1188}{20.419}=58.181m/sec$

So average velocity will be 58.181 m/sec

5 0

3 years ago

un tren parte de un punto kilometrico 0 alas 00 horas despues de rrecorrer 49 kilometros en untiempo 0.5 horas se averia porloqu

Leona [35]

The one one of the times

4 0

3 years ago