1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
schepotkina [342]
3 years ago
10

Help with these please?

Physics
2 answers:
Anuta_ua [19.1K]3 years ago
5 0

E=kq/r^2

q=(E*r^2)/k

q=(.086N/C)(1.7m^2)/(8.99*10^9N*m^2/C^2)

q=2.76*10^-11 C

q=2.8*10^-11 C

Anettt [7]3 years ago
4 0

Another badly worded question. The Field is always directed away from the point charge. The question is the direction towards q or away from it and that's not much of an improvement.

Formula

E = k * q / r^2

Givens

k = 8.99 * 10^9 Nm^2/c^2

q = ??

E = 8.6*10^-2

r = 1.7 m

Solution

8.6*10^-2 * 1.7^2 / 8.99 * 10^9 = q

0.24 / 8.99 *10^9 = q

q = 2.8 * 10^-11

A but the wording is so bad that you have to guess what the question means. q is positive because the charge is going to the right away from the test charge.

You might be interested in
Instructions:Select the correct answer from the drop-down menu. The Longmenshan Fault is in China. This fault was created when t
lina2011 [118]
I say Reverse Fault, Hope this helps :)
3 0
3 years ago
Please help I’ll give brainliest
marta [7]

Answer:

Repel

Unlike

Atrract

Fur

Balloon

Positivley charged

negative

postive

neutral

Explanation:

It goes from top to bottom

7 0
3 years ago
If you throw a baseball while riding a bike, the ball's speed relative to the ground is the sum of the bicycle's speed and the s
Ostrovityanka [42]
Take for example driving by with a cake in your hand, then dropping it while going 30 mph. It will not drop directly down, it will gradually go in the direction you were driving while falling.
This is true I believe, if I'm interpreting correctly.
5 0
3 years ago
The muzzle velocity of a rifle bullet is 709 m s−1along the direction of motion. If the bullet weighs 35 g, and the uncertainty
nydimaria [60]

Answer:

Uncertainty in position of the bullet is \Delta x=1.07\times 10^{-33}\ m

Explanation:

It is given that,

Mass of the bullet, m = 35 g = 0.035 kg

Velocity of bullet, v = 709 m/s

The uncertainty in momentum is 0.20%. The momentum of the bullet is given by :

p=mv

p=0.035\times 709=24.81\ kg-m/s

Uncertainty in momentum is,

\Delta p=0.2\%\ of\ 24.81

\Delta p=0.049

We need to find the uncertainty in position. It can be calculated using Heisenberg uncertainty principal as :

\Delta p.\Delta x\geq \dfrac{h}{4\pi}

\Delta x=\dfrac{h}{4\pi \Delta p}

\Delta x=\dfrac{6.62\times 10^{-34}}{4\pi \times 0.049}

\Delta x=1.07\times 10^{-33}\ m

Hence, this is the required solution.

7 0
3 years ago
What is the name of the device that regulates the amount of fuel going into the engine of a personal watercraft (pwc)?
defon
 The throttle is the name of the device that regulates the amount of fuel going into the engine of a personal watercraft (PWC). The throttle make the PWCs maneuverable. TO MAINTAIN STEERAGE, YOU MUST APPLY THROTTLE!<span> They are built for quick, sharp turns, low-radius circling, and rapid acceleration</span>

4 0
3 years ago
Other questions:
  • Calculate the final temperature of a mixture of 0.350 kg of ice initially at 218°C and 237 g of water initially at 100.0°C.
    6·1 answer
  • If the Sun suddenly turned off, we would not know it until its light stopped coming. How long would that be, given that the Sun
    10·1 answer
  • Calculate the kinetic energy of an 88-kg scooter moving at 10 m/s . express your answer to two significant figures and include t
    8·2 answers
  • Geothermal energy generation uses what kind of turbine?
    13·1 answer
  • A woman performs 2000 J of work in order to push a cart full of groceries 50 meters. How much force did she apply to the cart? *
    7·2 answers
  • WHO EVER ANSWERS CORRECT I'LL GIVE BRAINLIEST!!!!!!! Why might it be helpful to us to measure gravity fluctuations on Earth? Wha
    10·1 answer
  • How many carbon (C) atoms are in a molecule of CH2O?​
    8·2 answers
  • Choose the +x-direction to point to the right. • Object 1 has a mass 1.66 kg and is moving to the right at 11.2 m/s. • Object 2
    7·1 answer
  • Why do we use the name electromagnetism to describe the force of an
    5·1 answer
  • I have to make a presentation about ultrasound diagnostic (it's for physics). Does someone know more about that topic? I need to
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!