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3 years ago

Ill give brainlist help pleaseee asap

Physics

1 answer:

KIM [24]3 years ago

7 0

Answer:

20. This is a transverse wave.

21. a is a Crest

b is the wavelength

c is the amplitude

d is the trough

e isthe amplitude

f is the wavelength

g is time

Explanation:

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Another model rocket is accelerating at a rate of 3 m/s2 with a force of 1 N. What is the mass of the rocket?

madreJ [45]

Answer:

60M

Explanation:

5 0

3 years ago

Inductive charging is used to wirelessly charge electronic devices ranging from toothbrushes to cell phones. Suppose the base un

statuscvo [17]

The time required (in s) for the magnetic field to decrease to zero from its maximum value is 1.2 x 10⁻⁶ s.

<h3>Faraday's law of electromagnetic induction</h3>

Faraday's first law of electromagnetic induction states, “Whenever a conductor is placed in a varying magnetic field, an electromotive force is induced.

emf = NdФ/dt

emf = NBA/t

where;

N is number of turns of the coil
A is area of the coil
B is magnetic field
t is time

The time required (in s) for the magnetic field to decrease to zero from its maximum value is calculated as follows;

t = NBA/emf

t = (16 x 1.1 x 10⁻³ x 3.75 x 10⁻⁴) / (5.5)

t = 1.2 x 10⁻⁶ s

Thus, the time required (in s) for the magnetic field to decrease to zero from its maximum value is 1.2 x 10⁻⁶ s.

Learn more about magnetic field here: brainly.com/question/7802337

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7 0

2 years ago

A garden hose having with an internal diameter of 1.1 cm is connected to a (stationary) lawn sprinkler that consists merely of a

trapecia [35]

Answer:

Water leaves the sprinkler at a speed of 2.322 m/sec

Explanation:

We have given internal diameter of the garden $d_1=1.1cm$

Speed of water in the hose is $v_1=0.95m/sec$

Number of holes n = 22

Diameter of each holes $d_2=15cm$

According to continuity equation $A_1v_1=A_2v_2$

$d_1^2\times v_1=22\times d_2^2v_2$

$1.1^2\times 0.95=22\times 0.15^2\times v_2$

$v_2=2.322m/sec$

So water leaves the sprinkler at a speed of 2.322 m/sec

6 0

3 years ago

A 0.5 m diameter wagon wheel consists of a thin rim having a mass of 7 kg and six spokes, each with a mass of 1.2 kg. 1.2 kg 7 k

Arte-miy333 [17]

Explanation:

It is given that,

Mass of the rim of wheel, m₁ = 7 kg

Mass of one spoke, m₂ = 1.2 kg

Diameter of the wagon, d = 0.5 m

Radius of the wagon, r = 0.25 m

Let I is the the moment of inertia of the wagon wheel for rotation about its axis.

We know that the moment of inertia of the ring is given by :

$I_1=m_1r^2$

$I_1=7\times (0.25)^2=0.437\ kgm^2$

The moment of inertia of the rod about one end is given by :

$I_2=\dfrac{m_2l^2}{3}$

l = r

$I_2=\dfrac{m_2r^2}{3}$

$I_2=\dfrac{1.2\times (0.25)^2}{3}=0.025\ kgm^2$

For 6 spokes, $I_2=0.025\times 6=0.15\ kgm^2$

So, the net moment of inertia of the wagon is :

$I=I_1+I_2$

$I=0.437+0.15=0.587\ kgm^2$

So, the moment of inertia of the wagon wheel for rotation about its axis is $0.587\ kgm^2$ . Hence, this is the required solution.

4 0

4 years ago

The convex len called converging lens

olya-2409 [2.1K]

What is the question?

8 0

4 years ago

Read 2 more answers