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Zarrin [17]
3 years ago
12

If an electrostatically charged balloon is brought near other objects, which of the following will occur?

Physics
1 answer:
V125BC [204]3 years ago
5 0
<span>If an electrostatically charged balloon is brought near other objects,
then ...

-- It will be attracted to objects of the opposite charge.
and
-- It will be attracted to objects with a neutral charge.</span>
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Tarzans mass is 75kg. calculate his weight
monitta

Answer:

75kg=165.346697lbs

Explanation: F A T

6 0
3 years ago
Which two factors does the power of a machine depend on?
lianna [129]

The power of a machine depend on two factors are work and time.

Option C

<u>Explanation:</u>

In science, power defined as the amount of work done in a unit time. i.e. delivering work in a rate of time or energy supply, expressed in input of work or transmitted energy divided by the time interval (t) or W/t.

Example: Some work can be done in the long run with a low-power engine or in a short time with a motor with high performance. The equation for power can be given as

              Power\ (in\ watts) =\frac{\text { work (joules) }}{\text { time (seconds) }}

              P=\frac{W}{t}

7 0
3 years ago
A cube 10.0 cm on each side has a density of 2.053 x 10^4 kg/m^3. It’s apparent weight in fresh water is 192 N. Find the buoyant
insens350 [35]

Answer:

9 N

Explanation: Given that L = side of the cube = 10cm = 0.1m

Mass = Density * Volume

Let’s determine the volume of the cube in m^3.

V = L^3

V = 0.1^3 = 0.001m^3

Mass = 0.001 * 2.053 * 10^4 = 20.53kg

Weight = 20.53 * 9.8 = 201.194

Buoyant force = 201.194 – 192 = 9.194 N

This is approximately 9 N.

6 0
4 years ago
A child is swinging back and forth with a constant period and amplitude. Somewhere in front of the child, a stationary horn is e
Amanda [17]

Answer:

Explanation:

  We shall apply concept of Doppler's effect of apparent frequency to this problem . Here observer is moving sometimes towards and sometimes away from the source . When observer moves towards the source , apparent frequency is more than real frequency and when the observer moves away from the source , apparent frequency is less than real frequency . The apparent frequency depends upon velocity of observer . The formula for apparent frequency when observer is going away is as follows .

f = f₀ ( V - v₀ ) / V , f is apparent , f₀ is real frequency , V is velocity of sound and v is velocity of observer .

f will be lowest when v₀ is highest .

velocity of observer is highest when he is at the equilibrium position or at middle point .

So apparent frequency is lowest when observer is at the middle point and going away from the source  while swinging to and from before the source of sound .

3 0
3 years ago
Questions to consider:
Margaret [11]

Answer: 2352 J

Explanation:

A body's<u> gravitational potential energy</u> U depends on its position and is mathematically expressed as follows:

U=mgh

Where:

m=60 kg is the mass of the skater

g=9.8 m/s^{2} is the acceleration due gravity

h=4 m is the skater's current height

Solving:

U=(60 kg)(9.8 m/s^{2})(4 m)

U=2352 J

7 0
4 years ago
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