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Gnesinka [82]
3 years ago
12

Which hand is negatively charged?

Physics
2 answers:
gtnhenbr [62]3 years ago
8 0
Answer: B

explanation:
B as the most of negative charges and the lest of positve charges the more the negative charges the more that it is negative the more the positive the more the it is positive charge

sorry if I'm late
NARA [144]3 years ago
5 0

Answer:

Right because there are plus inside the hand

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Giving brainliest to the correct answers
Llana [10]

Answer:

we cant see the digram bro

Explanation:

6 0
3 years ago
A. Una onda armónica que se propaga por un medio unidimensional tiene una frecuencia de 500Hz y una velocidad de propagación de
Natasha2012 [34]

Answer:

0.117 m

Explanation:

First of all, we can find the wavelength of the wave in the problem, by using the wave equation:

v=f\lambda

where:

v = 350 m/s is the speed of the wave

f = 500 Hz is the frequency of the wave

\lambda is the wavelength

Solving for \lambda,

\lambda=\frac{v}{f}=\frac{350}{500}=0.7 m

This means that the distance between two consecutive points of the wave having a difference of phase of

\phi=2\pi

is 0.7 m.

Here we want to find the distance between two points that have a difference of phase of

\phi'=\frac{\pi}{3}

So, we can set up the following rule of three:

\frac{d}{\phi}=\frac{d'}{\phi'}

where d' is the distance we are looking for. Solving for d',

d'=d\frac{\phi'}{\phi}=(0.7)\frac{\pi/3}{2\pi}=\frac{1}{6}(0.7)=0.117 m

7 0
3 years ago
At a certain point in space, there is a potential of 800 V relative to zero. What is the potential energy of the system when a +
sammy [17]

To solve this problem we will apply the concepts related to electric potential and electric potential energy. By definition we know that the electric potential is determined under the function:

V = \frac{k_e q}{r}

k_e = Coulomb's constant

q = Charge

r = Radius

At the same time

U = \frac{k_e q_1q_2}{r}

The values of variables are the same, then if we replace in a single equation we have this expression,

U  = Vq

If we replace the values, we have finally that the charge is,

V = 800V

q = 1\mu C

U = (800V)(1*10^{-6}C)

U = 8*10^{-4}J

Therefore the potential energy of the system is 8*10^{-4} J

7 0
3 years ago
19) A child on a sled starts from rest at the top of a 15.0° slope. If the trip to the bottom takes 15.2 s,
sveticcg [70]

Answer: 288.8 m

Explanation:

We have the following data:

t=15.2 s is the time it takes to the child to reach the bottom of the slope

V_{o}=0 is the initial velocity (the child started from rest)

\theta=15\° is the angle of the slope

d is the length of the slope

Now, the Force exerted on the sled along the ramp is:

F=ma (1)

Where m is the mass of the sled and a its acceleration

In addition, if we draw a free body diagram of this sled, the force along the ramp will be:

F=mg sin \theta (2)

Where g=9.8 m/s^{2} is the acceleration due gravity

Then:

ma=mg sin \theta (3)

Finding a:

a=g sin \theta (4)

a=9.8 m/s^{2} sin(15\°) (5)

a=2.5 m/s^{2} (6)

Now, we will use the following kinematic equations to find d:

V=V_{o}+at (7)

V^{2}=V_{o}^{2}+2ad (8)

Where V is the final velocity

Finding V from (7):

V=at=(2.5 m/s^{2})(15.2 s) (9)

V=38 m/s (10)

Substituting (10) in (8):

(38 m/s)^{2}=2(2.5 m/s^{2})d (11)

Finding d:

d=288.8 m

6 0
3 years ago
You have 80 g of 60oC water and 80 g or 10oC water. What is the final temperature when the two are mixed? Explain.
blondinia [14]

The answer is 35 degrees Celsius

3 0
3 years ago
Read 2 more answers
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