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statuscvo [17]
4 years ago
13

A test charge is introduced into the electric field of a charge. It feels a force of 2 F where the electric feild is 4 E. What w

ould the force on the test charge be where the electric feild is 1 E
Physics
1 answer:
Elza [17]4 years ago
3 0

Answer:

0.5 F

Explanation:

since electric field is defined as force per charge!

so, force on test charge is directly proportional to electric field

here new electric field becomes 1/4 of old one

i.e, 4E-->1E

so force is also will become 1/4 of old one

i.e, 2F--> 1/4 × 2F =0.5 F

✌️:)

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Studentka2010 [4]

Answer:

(a) 8.362 rad/sec

(b) 6.815 m/sec

(c) 9.446 rad/sec^2

(d) 396.22 revolution

Explanation:

We have given that diameter d = 1.63 m

So radius r=\frac{d}{2}=\frac{1.63}{2}=0.815m

Angular speed N = 79.9 rev/min

(a) We know that angular speed in radian per sec

\omega =\frac{2\pi N}{60}=\frac{2\times 3.14\times 79.9}{60}=8.362rad/sec

(b) We know that linear speed is given by

v=r\omega =0.815\times 8.362=6.815m/sec

(c) We have given final angular velocity \omega _f=675rev/min

And \omega _i=79.9rev/min

Time t = 63 sec

Angular acceleration is given by \alpha =\frac{\omega _f-\omega _i}{t}=\frac{675-79.9}{63}=9.446rad/sec^2

(d) Change in angle is given by

\Theta =\frac{1}{2}(\omega _i+\omega _f)t=\frac{1}{2}(675+79.9)\times 1.05=396.22rev

7 0
3 years ago
Lin suffers from pain in her right wrist. Several doctors check her wrist regularly over a period of time. Doctors' notes and
FromTheMoon [43]

Answer:

D

Explanation:

They looked at her hand and made a formal conclusion from that

4 0
3 years ago
A displacement vector is 34.0 m in length and is directed 60.0° east of north. What are the components of this vector? Northward
PolarNik [594]

Answer:

A)  29.4 m 17.0 m; B) 2 m

Explanation:

If a vector is 34.0 m in length and is directed 60.0° east of north (which means 30.0° over the horizontal), then its coordinates will be:

Horizontal: (34.0 m)cos(30.0°)=29.4 m

Vertical: (34.0 m)sin(30.0°)=17 m

If one person walks 8.0 meters in a straight line and then walks 5.0 meters in another straight line, then the minimum displacement would be to go back over his tracks, displacing himself 8m-5m=3m, while the maximum displacement would be going straight ahead, displacing himself 8m+5m=13m. Any answer outside this interval is impossible (2m).

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3 years ago
Describe one way you can increase the strength of an electromagnet.
Vsevolod [243]

Answer:

(1) By increasing the number of loops of wire around the iron core

(2) increasing the current or voltage.

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3 years ago
If the force causing a mass to accelerate is multiplied by a number while keeping the mass the same, what happens to the acceler
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