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
Bad White [126]
3 years ago
8

There are only two types of charge. * 1 point True False

Physics
2 answers:
Dmitry_Shevchenko [17]3 years ago
6 0
True Positive And Negative
Vikki [24]3 years ago
6 0

Answer:

True: Positive and Negative

Explanation:

You might be interested in
If a bus is running with a speed of 72 km/hr,calculate the distance travelled by it in 5 second.Which of the following is right
ratelena [41]

Answer:

100m

Explanation:

conversation km to meter

join our wats up group

scan QR code

post question

get instant answer by trusted experts

for free

7 0
2 years ago
Medical cyclotrons need efficient sources of protons to inject into their center. In one kind of ion source, hydrogen atoms (i.e
blondinia [14]

Answer:

Explanation:

Electron's kinetic energy = 2 eV

= 2 x 1.6 x 10⁻¹⁹ J

1/2 m v² = 3.2 x 10⁻¹⁹

1/2 x 9.1 x 10⁻³¹ x v² = 3.2 x 10⁻¹⁹

v² = .703 x 10¹²

v = .8385 x 10⁶ m/s

Electrons revolve in a circular orbit when forced to travel in a magnetic field whose radius can be expressed as follows

r = mv / Bq

where m , v and q are mass , velocity and charge of electron .

here given magnetic field B = 90 mT

= 90 x 10⁻³ T

Putting these values in the expression above

r =  mv / Bq

= \frac{9\times10^{-31}\times.8385\times10^6}{90\times10^{-3}\times1.6\times10^{-19}}

= .052 mm.

3 0
3 years ago
A 2.5m long steel piano wire has a diameter of 0.5cm how great is the tention in the wire if it stretches by 0.45cm when tighten
UkoKoshka [18]

Answer:                 Their u go i found it their was about 3 pages i did not no what pages u had to do.

Explanation:

Download pdf
7 0
3 years ago
A physics student swings a tennis ball connected to a rope in a vertical circle with a constant speed of 6.29 m/s. The ball has
Alex777 [14]

Answer:

r = 0.5 m

Explanation:

First we find the angular speed of the ball by using its period:

ω = θ/t

For the time period:

ω = angular speed = ?

θ = angular displacement = 2π rad

t = time period = 0.5 s

Therefore,

ω = 2π rad/0.5 s

ω = 12.56 rad/s

Now, for the radius:

v = rω

r = v/ω

where,

v = linear speed = 6.29 m/s

r = radius = ?

r = (6.29 m/s)/(12.56 rad/s)

<u>r = 0.5 m</u>

8 0
3 years ago
A yo-yo has a string that is 0.95 m in length. What is the period of oscillation if the yo-yo is allowed to swing back and forth
yulyashka [42]

Answer:

Explanation:

As we know the , equation of time period for simple pendulum ,

T = 2*pi*\sqrt{l/g}

hence putting values we get ,

the solution is in picture ,

please  

Brain-list it or support me at my U-Tube channel " ZK SOFT&GAMING " I will be thankful

5 0
3 years ago
Other questions:
  • Describing Momentum Calculatthe momentum of cars A and answer the question Car A: Mass: 1,000 kilograms Velocity: 40 meters/seco
    10·2 answers
  • Is wind electrically charged
    13·1 answer
  • Which of the following statements can be concluded (deducted) from the parallel-axis theorem? The area moment of inertia of an a
    12·1 answer
  • Which of the following devices could be used to create a position--time graph for an object? 
    14·1 answer
  • Two solid spheres of radius R made of the same type of steel are placed in contact. The magnitude of the gravitational force the
    8·1 answer
  • Consider a wod raft with length = 5.0m, width 3.0 m and height = 1.0m, with density =600kg/m^3. There is an object of a mass of
    13·1 answer
  • The parallel plates in a capacitor, with a plate area of 7.10 cm2 and an air-filled separation of 2.20 mm, are charged by a 4.80
    13·1 answer
  • What's the thrust force of 20,000N
    14·1 answer
  • A spring has a length of 0.270 m when a 0.300 kg mass hangs from it, and a length of 0.750 m when a 2.80 kg mass hangs from it.
    5·1 answer
  • G volume of 0.025 m3. If the temperature of the gas is 290 K, what is the rms speed of the gas atoms
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!