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Vsevolod [243]
3 years ago
14

Write down the kirchhoff's laws in the adjoining circuit , find the current in each resistors​

Physics
1 answer:
lapo4ka [179]3 years ago
4 0

Answer:

You need a motor and a battery

Explanation:

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The acceleration of The Munster’s car is 9.71 m/s2 when he applies 5050 N of net force (by way of the engine). What is the mass
Ainat [17]

Given that,

Acceleration, a = 9.71 m/s²

Force, F = 5050 N

mass, m = ?

Since, we know that

F=ma

m= F/a

m= 5050/9.71

m= 520.08 kg

The mass of hi car is 520.08 kilograms.

4 0
3 years ago
Someone fires a 0.04 kg bullet at a block of wood that has a mass of 0.5 kg. (The block of wood is sitting on a frictionless sur
lidiya [134]

Answer:

22.22m/s

Explanation:

The momentum before a collision = momentum after collision so...

work out the momentum of the first object (the bullet)

its p = mv

0.04 kg × 300 m/s  = 0.54 kg × v

rearrange this to find v which is 0.04 x 300 = 12

so 12 = 0.54 x v

    12/0.5 = v

    v = 22.22m/s

hope this helps!

7 0
3 years ago
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields gene
Natasha2012 [34]

Answer:

A. B = 6.36 * 10^{-10} T

B. P ≈ 0

Explanation:

In order to calculate the magnetic field strength we have to use the magnetic field strength of a straight wire.

B = \frac{mi* I}{2\pi *d} (eq. I)

B = magnetic field strength at distance d

I = current (A)

mi = represented by the greek letter μ, represents the permeability of the free space, which is: 4 × π 10^(-7) T m/A

d = distance from the wire

By replacing the values in eq I, we have the following:

B = \frac{4\pi  10^{-7} T  m  A^{-1}  200 A}{2\pi *20 m}\\\\B = 6.36 * 10^{-10}  T\\ (eq II)

The earth magnetic field in the surface variates from 25 to 65 microteslas. Thus:

P = Percentage from the wires/percentage of the earth

P = \frac{6.36 * 10^{-10}T}{65* 10^{-3} T}\\ ∵ B ∴

P ≈ 0

5 0
4 years ago
A force is required for any change in an object's motion to occur.<br><br> True<br> False
sertanlavr [38]

Answer:

True

Explanation:

an object in motion stays in motion unless acted upon by another force

7 0
3 years ago
Read 2 more answers
Two rollerbladers face each other and stand at rest on a flat parking lot. tracey has a mass of 32 kg, and jonas has a mass of 4
galina1969 [7]
Momentum is a product of mass and the velocity of a body. The initial momentum is always equal to the final momentum during collisions between two bodies.
Therefore; M1U1 +M2U2 = M1V1+ M2V2, where m1 is the mass of tracey and m2 is the mass of jonas, while u is the initial velocity and v is the final velocity.
 (32 ×0)+ (45×0) = (32 × v1) + (45 × 0.50)
                       0 = 32V1 + 22.5
                     32 V1 = -22.5
                          V1 = - 0.703 ( negative indicates difference in direction)
There, Tracey's speed will be 0.703 m/s
8 0
3 years ago
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