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
SashulF [63]
3 years ago
9

Does electric and magnetic objects both have north and south poles

Physics
1 answer:
Aleksandr [31]3 years ago
6 0

Explanation:

hope this answer was helpful

You might be interested in
A 5.50-kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical
iris [78.8K]

Answer:

17.71N/m

Explanation:

The period of the spring is expressed according to the expression;

T = 2 \pi \sqrt{\frac{m}{k} } \\

m is the mass of the object

k is the force constant

Given

m = 5.50kg

T = 3.50s

Substitute into the formula;

T = 2 \pi \sqrt{\frac{m}{k} } \\3.5 = 2 (3.14) \sqrt{\frac{5.5}{k} } \\3.5 = 6.28 \sqrt{\frac{5.5}{k} } \\\frac{3.5}{6.28} =  \sqrt{\frac{5.5}{k} } \\0.557 = \sqrt{\frac{5.5}{k} } \\square \ both \ sides\\0.557^2 = (\sqrt{\frac{5.5}{k} })^2 \\0.3106 = \frac{5,5}{k}\\k = \frac{5.5}{0.3106}\\k =  17.71N/m

Hence the force constant of the spring is 17.71N/m

4 0
3 years ago
Equipotential surface A has a potential of 5650 V, while equipotential surface B has a potential of 7850 V. A particle has a mas
timurjin [86]

Answer:

0.247 J = 247 mJ

Explanation:

From the principle of conservation of energy, the workdone by the applied force, W = kinetic energy change + electric potential energy change.

So, W = ΔK + ΔU =1/2m(v₂² - v₁²) + q(V₂ - V₁) where m = mass of particle = 5.4 × 10⁻² kg, q = charge of particle = 5.10 × 10⁻⁵ C, v₁ = initial speed of particle = 2.00 m/s, v₂ = final speed of particle = 3.00 m/s, V₁ = potential at surface A = 5650 V, V₂ = potential at surface B = 7850 V.

So, W = ΔK + ΔU =1/2m(v₂² - v₁²) + q(V₂ - V₁)

          = 1/2 × 5.4 × 10⁻²kg × ((3m/s)² - (2 m/s)²) + 5.10 × 10⁻⁵ C(7850 - 5650)

          = 0.135 J + 0.11220 J

          = 0.2472 J

          ≅ 0.247 J = 247 mJ

5 0
3 years ago
Consider two laboratory carts of different masses but identical kinetic energies and the three following statements. I. The one
kolbaska11 [484]

Answer:

d) I and III only.

Explanation:

Let be m_{1} and m_{2} the masses of the two laboratory carts and let suppose that m_{1} > m_{2}. The expressions for each kinetic energy are, respectively:

K = \frac{1}{2}\cdot m_{1}\cdot v_{1}^{2} and K = \frac{1}{2}\cdot m_{2}\cdot v_{2}^{2}.

After some algebraic manipulation, the following relation is constructed:

\frac{m_{1}}{m_{2}} = \left(\frac{v_{2}}{v_{1}}\right)^{2}

Since \frac{m_{1}}{m_{2}} > 1, then \frac{v_{2}}{v_{1}} > 1. That is to say, v_{1} < v_{2}.

The expressions for each linear momentum are, respectively:

p_{1} = \frac{2\cdot K}{v_{1}} = m_{1}\cdot v_{1} and p_{2} = \frac{2\cdot K}{v_{2}} = m_{2}\cdot v_{2}

Since v_{1} < v_{2}, then p_{1} > p_{2}. Which proves that statement I is true.

According to the Impulse Theorem, the impulse needed by cart I is greater than impulse needed by cart II, which proves that statement II is false.

According to the Work-Energy Theorem, both carts need the same amount of work to stop them. Which proves that statement III is true.

6 0
3 years ago
You are asked to find the volume of a cube that is 2.5 cm high, 2.65 cm
Crazy boy [7]

Answer:

The correct answer is 2

Hoped I helped

Can u give me a brainliest

4 0
4 years ago
A circular conducting loop of radius 23.0 cm is located in a region of homogeneous magnetic field of magnitude 0.500 T pointing
Alchen [17]

Answer:

The magnitude of the induced emf is

Ф = 5.419 x 10⁻³ V

Explanation:

Given:

r = 23.0 cm = 0.23 m

β₁ = 0.50 T

β₂ = 2.50 * 0.50 T = 1.25 T

Calculate the magnitude of the induced emf the magnetic field is increasing

Ф = A * Δβ / Δt

A = π * r² = π * 0.23² m = 0.166 m²

Ф = 0.166m² * (1.25 - 0.5) T / 23 s

Ф = 5.419 x 10⁻³ V

4 0
4 years ago
Other questions:
  • Which scientist first proposed physical laws to mathematically describe the effect of forces on the motions of bodies?
    10·2 answers
  • Our Sun shines bright with a luminosity of 3.828 x 1025 Watt. Her energies
    11·1 answer
  • A woman throws a baseball from the back of an airplane to the front. From the perspective of the woman, the baseball travels at
    9·1 answer
  • The amount of kinetic energy an object has depends on its.
    14·2 answers
  • There have been incidents of violence at various Olympiads? true or false?
    7·2 answers
  • what would happen to the gravitational force between earth and the moon if the distance between them increased?
    8·1 answer
  • 1. A 1 kg cart moving with a speed of 3 m/s collides with a 2 kg cart at rest. If the carts stick together after the collision,
    5·1 answer
  • If a 2000 kg car is at rest and a 500 N force is applied to it. What acceleration will it experience?
    10·1 answer
  • A 30 kg dog runs at a speed of 15<br> What is the dog's kinetic energy?
    10·1 answer
  • The element oxygen, represented by the symbol O, is classified as
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!