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Svetlanka [38]
4 years ago
6

The rms current in an ac current is 3.6 a. find the maximum current

Physics
1 answer:
LUCKY_DIMON [66]4 years ago
7 0
A peak = A Rms x Sq root 2

Therefore 3.6 x sq root of 2
A peak = 5.09
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You are pushing an 80.0 N wheelbarrow as shown in (Figure 1). You lift upward on the handle of the wheelbarrow so that the only
AleksandrR [38]

Answer:

Wl = 1740 N

Explanation:

maximum lift weight unaided = force exerted (F) = 650 N

length of the wheelbarrow (L) = 1.4 m

weight of the wheelbarrow (w) = 80 N

distance of center of gravity of the wheel barrow from the wheel = 0.5 m

distance of center of gravity of the load from the wheel = 0.5 m

find the weight of the load (Wl)

from the diagram attached we can see that there is going to be a rotation about the axis A. let clockwise rotation be positive

ΣT = (F x 1.4) - ((Wl x 0.5) + (w x 0.5) = 0

(F x 1.4) = ((Wl x 0.5) + (w x 0.5)

Wl =

Wl =

Wl = 1740 N

6 0
2 years ago
When discussing the Earth's magnetic field we could say that the Earth has a
Mama L [17]
I am pretty sure that when discussing the Earth's magnetic field we could say that the Earth has a random collection of magnetic poles dispersed in different locations. This statement is the only correct one which represents the main points of <span>magnetic field's characteristics and features. Hope it will help you!</span>
4 0
3 years ago
A person on a roof throws one ball downward and an identical ball upward at the same speed. The ball thrown downward hits the gr
Alisiya [41]

Answer:C

Explanation:

Given

Both ball are thrown simultaneously with same velocity

Suppose h be the height of roof and u be the initial velocity of balls

For ball thrown from room initial total energy is

E_1=Potential\ Energy\ +\ kinetic\ energy

E_1=mgh+\frac{1}{2}mu^2

Now this ball potential energy convert to kinetic energy and add up in available kinetic energy to give 100 J at bottom

For second ball, energy at bottom is equal to kinetic Energy of ball

Therefore this energy remains constant and only converts to Potential Energy as ball moves upward

but as soon as ball hit the ground energy will be less than 100 J because first ball has sum of Potential and Kinetic energy .

6 0
3 years ago
A 59.7 g piece of metal that had been submerged in boiling water was quickly transferred into 60.0 mL of water initially at 22.0
Anna007 [38]

Answer:

s = 382.45 J/kg C

Explanation:

Here by energy equivalence we can say that energy given by the metal piece is same as the energy absorbed by the water

so here we have

m_1s_2\Delta T_1 = m_2s_2 \Delta T_2

here we know that

m_1 = 60 mL = 0.060 kg

s_1 = 4186 J/kg C

\Delta T_1 = 28.5 - 22

m_2 = 59.7 g = 0.0597 kg

\Delta T_2 = 100 - 28.5

0.060(4186)(28.5 - 22) = (0.0597)(s)(100 - 28.5)

1632.54 = 4.27 s

s = 382.45 J/kg C

5 0
4 years ago
What effects a materials resistance
goblinko [34]

Answer:

The type of material of which the resistor is made.

The length of the resistor.

The thickness of the resistor.

The temperature of the conductor.

8 0
3 years ago
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