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1 year ago

11. diagram 11 shows two boys swinging at the same speed

Physics

1 answer:

puteri [66]1 year ago

6 0

(a). By the inertia, it's difficult to stop heavier mass than lighter mass.

As, moment of inertia is directly proportional to the mass of the body.

Thus, more force is required to stop the boy with heavier mass than lighter mass.

The problem statement for the given case is,

The time taken by the heavier body to stop swinging is more than the lighter body, then what is the impact of weight on the time period of the swing?

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Two large parallel plates are 2.0 cm apart. The strength of the electric field between them is 50.0 N/C . What is the difference

diamong [38]

Express the distance in meters:

d= 2 cm =0.02 m

V = Ed = 50 N/C * 0.02 m = 1 N/C m = 1 V = +1.0 V

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2 years ago

The orbital period of a satellite is 2 x 106 s and its total radius is 2.5 x 1012 m.

MrMuchimi

Explanation:

Orbital period = 2 x 10⁶s

Total radius = 2.5 x 10¹²m

Unknown:

Tangential speed of the satellite = ?

Solution:

The tangential speed simply expresses the rate at which the distance moves around its orbit with time.

Since the orbit is taken to be circular;

Tangential speed = $\frac{2 x pi x r}{t}$

r is the radius

t is the time or orbital radius

Tangential speed = $\frac{2 x 3.14 x 2.5 x 10¹²}{2 x10[tex]^{6}$ }[/tex]

Tangential speed = 7.85 x 10⁶m/s

Learn more:

Circular motion brainly.com/question/2562955

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3 years ago

Read 2 more answers

how much energy is needed to heat 2kg of cooking oil with a specific heat capacity of 2000j/kg°c from 20°c to 120°c

mash [69]

Answer:

400kj

Explanation:

h =mass × specific heat capacity × change in temperature

= 2×2000×[120-20]

=2×2000×100

=400000j

=400kj

3 0

3 years ago

A stun gun or TASER is designed to put out a few seconds worth of electric pulses that impress a

iren [92.7K]

Answer:

Resistance = 400000 Ohms

Explanation:

Given the following data;

Voltage = 1200 V

Current = 3 mA = 3/1000 = 0.003 A

To find the resistance;

Voltage = current * resistance

Resistance = 1200/0.003

Resistance = 400000 Ohms

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3 years ago

Sayid made a chart listing data of two colliding objects.

Artemon [7]

Answer:

velocity of combined objects is 6 m/s

Explanation:

As per law of conservation of momentum

total momentum before collision = total momentum after collision

since the two objects sticks together after collision so we will have

$m_1v_{1i} + m_2v_{2i} = (m_1 + m_2) v$

Now plug in all values in it

$300(10) + 100(-6) = (300 + 100) v$

$3000 - 600 = 400(v)$

$2400 = 400 v$

$v = 6 m/s$

so the missing value in the table is velocity which is 6 m/s

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3 years ago