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3 years ago

A battery produces ________current, which is current that flows in only one direction.

Physics

2 answers:

love history [14]3 years ago

7 0

<span>A battery produces DIRECT current ("DC"), which is
current that flows in only one direction. </span>

Anna71 [15]3 years ago

4 0

The correct answer to the question is direct current i.e a battery produces direct current which is the current that flows in only one direction.

EXPLANATION:

Before coming into any conclusion, first we have to understand the types of current. There are generally two types of current which are known as direct current and alternating current.

Direct current:

A direct current is the current which moves in one direction only. It may be a steady current or a pulsating direct current.

A steady current is a time independent current i.e its magnitude is constant with time. It is also known as a stationary current. For instance, the current flowing through a battery.

A pulsating dc current is a type of dc current in which the magnitude of the current changes with time, but moves in one direction. For instance, the current produced in a junction diode rectifier.

Alternating current: Alternating current is the type of fluctuating current whose magnitude changes continuously and direction changes periodically.

In the given question, the current produced in a battery is flowing in one direction only.

Hence, the correct answer to the question will be direct current.

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3 years ago

The student quickly discovers that placing the marshmallow over the flame is more effective than heating the marshmallow on the

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Answer:

The answer is convection.

Explanation:

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4 years ago

28. (a) A daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving up a 32° ramp at a sp

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Answer:

a) # buses = 7

Explanation:

For this exercise we use the kinematic equations, let's find the time it takes to reach the same height

y = $v_{oy}$ t - ½ g t²

Let's decompose the speed, with trigonometry

v₀ₓ = v₀ cos θ

$v_{oy}$ = v₀ sin θ

v₀ₓ = 40 cos 32

v₀ₓ = 33.9 m / s

$v_{oy}$ = 40 sin32

$v_{oy}$ = 21.2 m / s

When it arrives it is at the same initial height y = 0

0 = ( $v_{oy}$ - ½ gt) t

That has two solutions

t = 0 when it comes out

t = 2 $v_{oy}$ / g when it arrives

t = 2 21.2 /9.8

t = 4,326 s

We use the horizontal displacement equation

x = vox t

x = 33.9 4.326

x = 146.7 m

To find the number of buses we can use a direct proportions rule

# buses = 146.7 / 20

# buses = 7.3

# buses = 7

The distance of the seven buses is

L = 20 * 7 = 140 m

b) let's look for the scope for this jump

R = vo2 sin2T / g

R = 40 2 without 2 32 /9.8

R = 146.7 m

As we can see the range and distance needed to pass the seven (7) buses is different there is a margin of error of 6.7 m in favor of the jumper (security)

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3 years ago

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