4 years ago

Predict how heat would flow if beaker A is moved so that it's touching beaker B

Physics

1 answer:

ra1l [238]4 years ago

6 0

Well,

It really depends on thier temperature. But the answer is C) Heat would flow from both beakers.

You might be interested in

all of the following answer choices are ideas from daltons atomic theory. which one of them do we now know is not true?

dem82 [27]

Did you forget to include the options?

5 0

3 years ago

Atruck with a mass of 5280 Kg has an acceleration of 45 m/s/s what is the force acting on the truck?

horrorfan [7]

117.3 I think that’s it mb if that wrong

8 0

3 years ago

Please help me! this is timed!

Arada [10]

Answer:

Radiation

Explanation:

Radiation refers to the emission of energy in rays or waves

8 0

3 years ago

The pulley has an efficiency of 78%. How much useful work does the pulley do if you perform 775 J of work on the pulley

LekaFEV [45]

Answer:

605 J

Explanation:

Efficiency = work out / work in

0.78 = W / 775 J

W = 605 J

4 0

4 years ago

A 780g, 50-cm-long metal rod is free to rotate about a frictionless axle at one end. While at rest, the rod is given a short but

Semmy [17]

Answer:

9.6 rad/s

Explanation:

$L$ = length of the metal rod = 50 cm = 0.50 m

$M$ = Mass of the long metal rod = 780 g = 0.780 kg

Moment of inertia of the rod about one end is given as

$I = \frac{ML^{2}}{3} = \frac{(0.780)(0.50)^{2}}{3} = 0.065 kgm^{2}$

$F$ = force applied by the hammer blow = 1000 N

Torque produced due to the hammer blow is given as

$\tau = \frac{FL}{2}$

$\tau = \frac{(1000)(0.50)}{2}$

$\tau = 250 Nm$

$t$ = time of blow = 2.5 ms = 0.0025 s

$w$ = Angular velocity after the blow

Using Impulse-change in angular momentum, we have

$I w = \tau t\\(0.065) w = (250) (0.0025)\\w = 9.6 rads^{-1}$

5 0

3 years ago