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3 years ago

Rolled cookies are cut into fancy shapes. True False

Physics

2 answers:

Paha777 [63]3 years ago

5 0

Answer:

false

Explanation:

the answer is false

Gennadij [26K]3 years ago

4 0

Answer:

true

Explanation:

cause why not, try new things init

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Describe how transverse waves can be produced by a rope. Then describe hiw pieces of the rope move as waves pass.

Oduvanchick [21]

We did this experiment before, when the rope moves, it represents the waves passing through in from the level of intensity. I hope this is a good answer.

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4 years ago

A 30 g horizontal metal bar, 13 cm long, is free to slide up and down between two tall, vertical metal rods that are 13 cm apart

natita [175]

Answer:

Terminal speed, v = 6901.07 m/s

Explanation:

It is given that,

Mass of the horizontal bar, m = 30 g = 0.03 kg

Length of the bar, l = 13 cm = 0.13 m

Magnetic field, $B=5.5\times 10^{-2}\ T$

Resistance, R = 1.2 ohms

We need to find the terminal speed oat which the bar falls. When terminal speed is reached,

Force of gravity = magnetic force

$mg=ilB$ ..................(1)

i is the current flowing

l is the length of the rod

Due to the motion in rods, an emf is induced in the coil which is given by :

$E=Blv$ , v is the speed of the bar

$iR=Blv$

$i=\dfrac{Blv}{R}$

Equation (1) becomes,

$mg=\dfrac{B^2l^2v}{R}$

$v=\dfrac{mgR}{B^2l^2}$

$v=\dfrac{0.03\times 9.8\times 1.2}{(5.5\times 10^{-2})^2(0.13)^2}$

v = 6901.07 m/s

So, the terminal speed at which the bar falls is 6901.07 m/s. Hence, this is the required solution.

5 0

3 years ago

Please help me with 15,14qqqq

hram777 [196]

OK what is the hole answer i can help you

3 0

3 years ago

When a pitcher throws a baseball, it reaches a top speed of 39 m/s. if the

Aliun [14]

From the calculation, the acceleration of the body is 26m/s^2.

<h3>What is motion under gravity?</h3>

When an object is thrown up or down, the motion of the body is influenced by the gravitational pull on the body.

Now;

Given that;

v = 39 m/s

t = 1.5 s

u = 0 m/s

a = ?

v = u + at

v = at

a = v/t

a = 39 m/s/1.5 s

a = 26m/s^2

Learn more about acceleration:brainly.com/question/12550364

#SPJ1

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2 years ago

Name the four phases of the lunar cycle

Serggg [28]

Answer:

Hello there!

This is a picture that helped me learn the phases in an easy way. I hope it helps you too.

Explanation:

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3 years ago