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
DanielleElmas [232]
3 years ago
15

An object has a charge of 4.5 c is it negative or positive

Physics
2 answers:
Dmitry [639]3 years ago
7 0
This is a positive charge.
Westkost [7]3 years ago
5 0
It has a positive charge
You might be interested in
The aorta is the main artery from the heart. a typical aorta has an inside diameter of 1.8 cm and carries blood at speeds of up
defon

Answer:

Explanation:

Volume per unit time flowing   will be conserved

a₁v₁  = a₂ v₂

π r₁² x v₁ = π r₂² x v₂

(0.9 x 10⁻²)² x .35 = ( .45 x 10⁻² )² x v₂

v₂ = 1.4 m / s

3 0
3 years ago
What is the least count of screw gauge and vernier calliper (9th grade) please help! ​
nadezda [96]
The least count is the smallest unit of measurement which an instrument can take accurately
7 0
2 years ago
A 20.00 kg lead sphere is hanging from a hook by a thin, massless wire 2.80 m long and is free to swing in a complete circle. Tr
Tema [17]

The minimum initial speed of the dart so that the combination makes a complete circular loop after the collision is 58.5 m/s.

<h3>Minimum speed for the object not fall out of the circle</h3>

The minimum speed if given by tension in the wire;

T + mg = ma

T + mg = m(v²)/R

tension must be zero for the object not fall

0 + mg = mv²/R

v = √(Rg)

<h3>Final speed of the two mass after collision</h3>

Use the principle of conservation of energy

K.Ef  = K.Ei + P.E

¹/₂mvf² = ¹/₂mv² + mg(2R)

¹/₂vf² = ¹/₂v² + g(2R)

¹/₂vf² = ¹/₂(Rg) + g(2R)

vf² = Rg + 4Rg

vf² = 5Rg

vf = √(5Rg)

vf = √(5 x 2.8 x 9.8)

vf = 11.7 m/s

<h3>Initial speed of the dart</h3>

Apply principle of conservation of linear momentum for inelastic collision;

5v = vf(20 + 5)

5v = 11.7(25)

5v = 292.5

v = 58.5 m/s

Learn  more about linear momentum here: brainly.com/question/7538238

#SPJ1

3 0
1 year ago
By applying a force of one Newton, one can hold a body of mass _​
SVEN [57.7K]

Answer:

By applying a force of one Newton, one can hold a body of mass of 102 gram.

Explanation:

  • Force is the pull or push of an object. It can be mathematically measured as, F= m* g.

                       where, F= force in newton

                                  m= mass in kg

                                  g= acceleration due to gravity (meter/second^{2} )

  • For 1 newton force,

                                   F= m* 9.8

                            or,   m= \frac{1}{9.8}= 0.102 kg

                            or,   m= 102 gram.

  • Hence, 102 gram mass can be hold by one Newton force.

3 0
3 years ago
What is the acceleration of a car at rest that speeds up to 75m/s over 25 seconds?
Yuki888 [10]
It’s a because I just did it
6 0
3 years ago
Other questions:
  • A battery of voltage V delivers power P to a resistor of resistance R connected to it. By what factor will the power delivered t
    7·1 answer
  • If your kinetic energy is different from your work input (either greater or less) throuroughly explain what caused this discrepe
    8·1 answer
  • A solar eclipse that occurs when the new moon is too far from earth to completely cover the sun can be either a partial solar ec
    8·1 answer
  • Is the hand grip test an example of an isometric or an isotonic muscle contraction? Explain your reasoning.
    7·1 answer
  • Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from t
    13·1 answer
  • Explain why is the temperature of a hot tea higher than the temperature of iced tea?
    15·1 answer
  • Please answer these, I’m willing to give plenty of points.
    6·1 answer
  • 0.22 L of pancake syrup has a mass of 33 g.
    15·1 answer
  • One end of an elastic cord is fastened to a steel beam. A metal weight with a mass of 68 kg is attached to the other end of the
    5·1 answer
  • One mole of a substance contains 6.02 × 1023 protons and an equal number of electrons. If the protons could somehow be separated
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!