2 years ago

An electric drill transfers some energy wastefully. Aside from heat, what else carries the energy that it transfers wastefully?

Physics

1 answer:

earnstyle [38]2 years ago

3 0

Sound and thermal/ heat energy.

Explanation:

Electric drill use electrical energy to convert it into kinetic, but there are some energy waste during the conversion in the form of sound and thermal caused by electric motor.

You might be interested in

What causes diffferent air density?

ololo11 [35]

Answer:

The temperature and gravity both affects the density

5 0

2 years ago

Just the the moon seems to shine and the two below it.

katrin [286]

The first one is revolves

5 0

2 years ago

A skater has rotational inertia 4.2 kg.m2 with his fists held to his chest and 5.7 kg.m2 with his arms outstretched. The skater

Fynjy0 [20]

Answer:

6.13428 rev/s

Explanation:

$I_f$ = Final moment of inertia = 4.2 kgm²

I = Moment of inertia with fists close to chest = 5.7 kgm²

$\omega_i$ = Initial angular speed = 3 rev/s

$\omega_f$ = Final angular speed

r = Radius = 76 cm

m = Mass = 2.5 kg

Moment of inertia of the skater is given by

$I_i=I+2mr^2$

In this system the angular momentum is conserved

$L_f=L_i\\\Rightarrow I_f\omega_f=I_i\omega_i\\\Rightarrow \omega_f=\dfrac{I_i\omega_i}{I_f}\\\Rightarrow \omega_f=\dfrac{(5.7+2\times 2.5\times 0.76^2)3}{4.2}\\\Rightarrow \omega_f=6.13428\ rev/s$

The rotational speed will be 6.13428 rev/s

5 0

2 years ago

4. If the velocity of the particles is high, they will collide with each other with less force.

tresset_1 [31]

Answer:

7657

Explanation:

3 0

2 years ago

15. In the diagram shown, the emf of the secondary winding is______ the emf of the primary winding.

sp2606 [1]

Answer:

Greater than

Explanation:

3 0

2 years ago