How to covert ma into amphere?

Answers

Answer 1

Answer: 1 ampere = 1,000 milliamperes

1 A = 1,000 mA

To calculate the number of Amperes, divide the number of milliamperes by 1,000.

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A coil of insulated wire is wound many times around an iron bar. The wire is connected to a battery and a contact switch. The contact switch is alternately flipped closed and left closed, so the wire carries a current through it, and then flipped open and left open, so that the current stops. Describe what magnetic fields are created, if those magnetic fields in turn induce an emf, and whether the induced emf is in the direction of the original current or opposite to it. Justify your answer using Lenz's law and the conditions which can cause a magnetic field to induce an emf. You may draw a diagram if it helps you to visualize the apparatus.
A 1500 kg car drives around a flat 200-m-diameter circular track at 25m/s. What are the magnitude and direction of the net force on the car? What causes this force?
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If a 3 kg object has a momentum of 33 kg ms whats its velocity?

Answers

Momentum = (mass) x (speed)

33 kg-m/s = (3 kg) x (speed)

Divide each side by 3 kg :

(33 kg-m/s) / (3 kg) = speed

11 m/s = speed

(You asked for velocity, but didn't give us any information about the direction
in which the object is moving. So we can only work with the speed.)

Given a 3.00 μF capacitor, a 7.75 μF capacitor, and a 5.00 V battery, find the charge on each capacitor if you connect them in the following ways. (a) in series across the battery 3.00 μF capacitor μC 7.75 μF capacitor μC (b) in parallel across the battery 3.00 μF capacitor μC 7.75 μF capacitor μC.

Answers

Answer:

a) Q1= Q2= 11.75×10^-6Coulombs

b) Q1 =15×10^-6coulombs

Q2 = 38.75×10^-6coulombs

Explanation:

a) For a series connected capacitors C1 and C2, their equivalent capacitance C is expressed as

1/Ct = 1/C1 + 1/C2

Given C1 = 3.00 μF C2 = 7.75μF

1/Ct = 1/3+1/7.73

1/Ct = 0.333+ 0.129

1/Ct = 0.462

Ct = 1/0.462

Ct = 2.35μF

V = 5.00Volts

To calculate the charge on each each capacitors, we use the formula Q = CtV where Cf is the total equivalent capacitance

Q = 2.35×10^-6× 5

Q = 11.75×10^-6Coulombs

Since same charge flows through a series connected capacitors, therefore Q1= Q2=

11.75×10^-6Coulombs

b) If the capacitors are connected in parallel, their equivalent capacitance will be C = C1+C2

C = 3.00 μF + 7.75 μF

C = 10.75 μF

For 3.00 μF capacitance, the charge on it will be Q1 = C1V

Q1 = 3×10^-6 × 5

Q1 =15×10^-6coulombs

For 7.75 μF capacitance, the charge on it will be Q2 = 7.75×10^-6×5

Q2 = 38.75×10^-6coulombs

Note that for a parallel connected capacitors, same voltage flows through them but different charge, hence the need to use the same value of the voltage for both capacitors.

1. A player kicks a football from ground level with an initial velocity of 22m/s, 35° above the horizontal. Assume that air resistance is negligible. Find the ball’s hang time.a. Find the maximum height of the ball in question 2.

b. Find the ball’s range from question 2.

Answers

Answer:

2.57 s

8.12 m

46.4 m

Explanation:

1. In the y direction:

s = 0 m

u = 22 sin 35° m/s = 12.6 m/s

a = -9.8 m/s²

Find: t

s = ut + ½ at²

0 = (12.6) t + ½ (-9.8) t²

t = 2.57 s

2. In the y direction:

u = 12.6 m/s

v = 0 m/s

a = -9.8 m/s²

Find: s

v² = u² + 2as

0² = (12.6)² + 2 (-9.8) s

s = 8.12 m

3. In the x direction:

u = 22 cos 35° m/s = 18.0 m/s

a = 0 m/s²

t = 2.57 s

Find: s

s = ut + ½ at²

s = (18.0) (2.57) + ½ (0) (2.57)²

s = 46.4 m

A merry-go-round makes 18 rotations in 3 minutes. What is its angular speed in rpm?

Answers

The angular speed in rpm will be 6. Angular speed is defined as the ratio of the revolution in the given time interval.

What is angular speed ?

The rate of change of angulardisplacement is defined as angular speed.

ω = n/t

Where,

n is the number of revolution

t is the time

ω is the angular speed

ω = n/t

ω = 18/6

ω = 3 rpm

Hence,the angular speed in rpm will be 6 .

To learn more about the angular speed, refer to the link;

brainly.com/question/9684874

#SPJ2

18 rotations
3 minutes
rotations per minute (RPM) = 18/3 = 6

The energy is water but i wanf to know how does it affect the enviorment?

Answers

It affects the environment because more animals and plants will grow. Down side is if there are bugs or insects that need water to live, if there's more water than more bugs. If bugs also feed on plants there could be an over population.

Gravity and friction are two kinds ofa.inertia
b.forces
c.masses
d.gravity

Answers

The answer is b, gravity and friction are forces.

Answer: B forces Hope this helps!!

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A woman lifts her 100-newton child up one meter and carries her for a distance of 50 meters to the 3.2child’s bedroom. How much work does the woman do?