3 years ago

someone help me please

Physics

2 answers:

RoseWind [281]3 years ago

7 0

You need a picture but can you please mark me brainliest

Lemur [1.5K]3 years ago

4 0

Answer:

but for helping we need yr ques nd they r not here

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You have to design a loop-the-loop for a new amusement park so that when each car passes the top of the loop inverted (upside-do

elena-14-01-66 [18.8K]

first of all go to slader .com to serach up this answer your welcome they have the best answers

6 0

3 years ago

A piano wire with mass 2.60g and length 84.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and amplit

likoan [24]

Answer:

Power will be 0.2023 watt

And when amplitude is halved then power will be 0.0505 watt

Explanation:

We have given mass of the Piano wire m = 2.60 gram = 0.0026 kg

Length of wire l = 84 cm = 0.84 m

So mass density $\mu =\frac{m}{l}=\frac{0.0026}{0.84}=0.0031kg/m$

Tension in the wire T = 25 N

Frequency f = 120 Hz

So angular frequency $\omega =2\pi f=2\times 3.14\times 120=753.6rad/sec$

And amplitude A = 1.6 mm = 0.0016 m

We have to find the generated power

Power is given by $P=\frac{1}{2}\sqrt{\mu T}\omega ^2A^2=\frac{1}{2}\times \sqrt{0.0031\times 25}\times 753.6^2\times 0.0016^2=0.2023watt$

From the relation we can see that power $P\ \propto\ A^2$

So if amplitude is halved then power will be $\frac{1}{4}$ times

So power will be equal to $\frac{0.2023}{2}=0.0505watt$

4 0

3 years ago

which of the following cannot be increased by using a machine of some kind? work, force, speed, torque

Lemur [1.5K]

Explanation:

Work cannot be increased by using a machine of some kind.

8 0

2 years ago

Help pls they are all going to have the same answers.

Liula [17]

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4 0

3 years ago

A parallel circuit contains an 18-V battery wired with 2 bulbs with resistances of 8

RSB [31]

Answer:

See below

Explanation:

Total current will be 18 v/ 8 ohms + 18v / 24 ohms = 3 amps

Equivalent resistance = 1 / (1/8 + 1/24) = 6 Ω

7 0

2 years ago

￼someone help me please

someone help me please