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Ad libitum [116K]
3 years ago
14

How is everyone's day been so far?

Physics
1 answer:
Katen [24]3 years ago
4 0

Answer:

It's been all great how about u.

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a wheel of mass 38kg is lifted to a height of 0.8m .how much gravitional potential energy is added to the wheel? accélération du
White raven [17]
297.92J of GPE is added.

4 0
3 years ago
1. A pendulum has a period of 3 seconds. What's its frequency? 2. A pendulum has a frequency of 0.25 Hz. What's its period? 3. A
RideAnS [48]

Answer:

(1) 0.333 Hz

(2) 4 sec

(3) 2 sec, 0.5 Hz

Explanation:

(1) We have given time period of pendulum is 3 sec

So T = 3 sec

Frequency will be equal to f=\frac{1}{T}=\frac{1}{3}=0.333Hz

(2) Frequency of the pendulum is given f = 0.25 Hz

Time period is equal to T=\frac{1}{f}=\frac{1}{0.25}=4sec

(3) It is given that a pendulum makes 10 back and forth swings in 20 seconds

So time taken to complete 1 back and forth swings = =\frac{20}{10}=2sec

So time period T = 2 sec

Frequency will be equal to f=\frac{1}{T}=\frac{1}{2}=0.5Hz

6 0
3 years ago
Read 2 more answers
When the compressor of an air conditioner starts up, it draws a current of 50 A. If the start-up time is 0.60 s, then the amount
7nadin3 [17]

Answer:

30 C

Explanation:

Given:

Current flowing in the circuit (I) = 50 A

Start-up time (t) = 0.60 s

Now, we know that, charge drawn in through a cross sectional area of the circuit is given as:

q=It

Where, 'q' is the amount of charge drawn, 'I' is the current and 't' is the start-up time.

Now, plug in 50 A for 'I', 0.60 s for 't' and solve for 'q'. This gives,

q=50\ A\times 0.60\ s\\\\q=30\ C

Therefore, the amount of charge drawn in the circuit at the start-up of the compressor of an air conditioner is 30 C.

6 0
4 years ago
You throw a 5.5 g coin straight down at 4.0 m/s from a 25-m-high bridge.
yuradex [85]

<u><em>Answer</em></u>

A) 1,347.5 Joules

B) 22.49 m/s


<u><em>Explanation</em></u>

<u>Part A</u>

The work done by the gravity is known as potential energy.

It is given by;

P.E = mgh

Where m is mass, g is acceleration due to gravity and h is the vertical height.

P.E = 5.5 × 9.8 ×25

= 1,347.5 Joules.

<u>Part B</u>

Using the Newton's third Law of motion,

V² = U² +2as

Where v is final velocity, u is the initial velocity, and s is the displacement of the stone.

V² = 4² + (2×9.8×25)

= 16 + 490

= 506

V = √506

= 22.49 m/s


6 0
4 years ago
Read 2 more answers
What would happen if you took a really strong metal box and you started teleporting in hundreds and hundreds of small cotton bal
mojhsa [17]
It will not explode since the mass of the cotton balls is so low but rather will most likely break the lock and hinges and come out.
4 0
3 years ago
Read 2 more answers
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