Ask question

Ask question

All categories

3 years ago

8

Daniel is holding an extremely hot cup of coffee in his hand he tells his friend that thermal energy is flowing from his hands t

o the cup is Daniel right or wrong why or why not

1 answer:

cestrela7 [59]3 years ago

4 0

Answer:

Daniel is wrong.

Explanation:

Daniel needs to reverse the order. Thermal energy flows from the cup to his hand.

You might be interested in

The 60kg skier is shown below skiing down a 35° incline with a coefficient of friction is 0.08. Determine the acceleration of th

amid [387]

The acceleration of the skier is $4.98 m/s^2$ down along the incline

Explanation:

We can solve this problem by writing the equations of motion of the skier along the incline.

Along the direction perpendicular to the incline, we have:

$N-mg cos \theta=0$ (1)

where

N is the normal reaction of the plane on the skier

$mgcos \theta$ is the component of the weight perpendicular to the plane, with

m = 60 kg is the mass of the skier

$g=9.8 m/s^2$ is the acceleration of gravity

$\theta=35^{\circ}$ is the angle of the incline

Along the direction parallel to the incline, we have

$mg sin \theta - \mu N = ma$ (2)

where

$mg sin \theta$ is the component of the weight parallel to the incline

$\mu N$ is the force of friction, with

$\mu=0.08$ is the coefficient of friction

a is the acceleration of the skier

From (1) we find

$N=mg cos \theta$

And substituting into (2),

$mg sin \theta - \mu (mg cos \theta) = ma\\a=g sin \theta - \mu g cos \theta = g(sin \theta-\mu cos \theta) = (9.8)(sin 35^{\circ}-0.08cos 35^{\circ})=4.98 m/s^2$

Learn more about inclined plane here:

brainly.com/question/5884009

#LearnwithBrainly

8 0

3 years ago

stiks02 [169]

Answer:

I best answer is true sorry if it's wrong

3 0

3 years ago

Read 2 more answers

A rollerblader is blading along the sidewalk. Which forms of measurement would be the best to use to determine the rollerblader'

Greeley [361]

You would use distance an time formula to mathmaticly solve

3 0

3 years ago

Alex is asked to move two boxes of books in contact with each other and resting on a rough floor. He decides to move them at the

Lilit [14]

Answer:

Explanation:

The force of friction acting on the system

= .04 x 9.8 ( 10.2 + 7 )

= 6.74 N

Net force = 8.9 - 6.74

= 2.16 N

Acceleration in the system

= 2.16 / ( 10.2 + 7 )

= .12558 m / s ²

Contact force between boxes = FP

Considering force on box A

Net force = 8.9 - FP

Applying Newton's law on box A

8.9 - FP = 10.2 x .12558

= 1.28

FP = 8.9 - 1.28

= 7.62 N

5 0

3 years ago

Name one non-metal that is a good conductor and why??

Vesna [10]

Answer:

silver

Explanation:

It is because it contains a higher number of movable atoms ( free electrons)

6 0

2 years ago