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3 years ago

explain y it is easier to loosen a tight but using a spanner with along handle than with a short handle

Physics

1 answer:

8090 [49]3 years ago

3 0

Answer:

This is because using a long handled requires less force to the center of gravity and makes it easier to rotate than a short handled spanner

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Which of the following are true for acceleration?

trapecia [35]

D. Acceleration describes how the velocity changes in time.

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3 years ago

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Calculate the force of gravity between a 2.50 kg newborn baby and a 80.0 kg doctor standing 0.250 m away. G = 6.67 E -11 N*m2/kg

Alex787 [66]

Answer: 2.13 × 10⁻⁷ N

Explanation:

Gravitational force exists between any two bodies having mass.

Force of gravity is given by:

$F =G\frac{Mm}{r^2}$

It is given that, mass of newborn baby is M = 2.50 kg

Mass of the doctor, m = 80.0 kg

Distance between the two, r = 0.250 m

Gravitational constant, G = 6.67 × 10⁻¹¹ N m²/kg²

⇒F = (6.67 × 10⁻¹¹ N m²/kg² × 2.50 kg × 80.0 kg )÷ (0.250 m)² = 2.13 × 10⁻⁷ N

Thus, the force of gravity between new born baby and doctor is 2.13 × 10⁻⁷ N.

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3 years ago

Two golf balls are thrown with the same speed off the top of a large bridge at the same time. ball a is thrown straight downward

iren2701 [21]

I think that ball a hit the ground because it says that it went straight down.

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4 years ago

Two instruments produce a beat frequency of 5 Hz. If one has a frequency of 264 Hz, what could be the frequency of the other ins

Lerok [7]

Answer:

259 Hz or 269 Hz

Explanation:

Beat: This is the phenomenon obtained when two notes of nearly equal frequency are sounded together. The S.I unit of beat is Hertz (Hz).

From the question,

Beat = f₂-f₁................ Equation 1

Note: The frequency of the other instrument is either f₁ or f₂.

If the unknown instrument's frequency is f₁,

Then,

f₁ = f₂-beat............ equation 2

Given: f₂ = 264 Hz, Beat = 5 Hz

Substitute into equation 2

f₁ = 264-5

f₁ = 259 Hz.

But if the unknown frequency is f₂,

Then,

f₂ = f₁+Beat................. Equation 3

f₂ = 264+5

f₂ = 269 Hz.

Hence the beat could be 259 Hz or 269 Hz

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3 years ago

Write two examples of machine which changes the direction of force

Ostrovityanka [42]

Answer:

Washign machine and swingset

Explanation:

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3 years ago

explain y it is easier to loosen a tight but using a spanner with along handle than with a short handle​

explain y it is easier to loosen a tight but using a spanner with along handle than with a short handle