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3 years ago

15

Why can you exert a greater force on the pedals of a bicycle if you pull up on the handlebars?

1 answer:

Alex Ar [27]3 years ago

5 0

Newtons laws of motion. Every action has an equal and opposite reaction. pulling UP on the handlebars pushes you DOWN on the pedals with the same force.

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KIM [24]

Answer:

Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C.

Explanation:

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3 years ago

A piano of mass 852 kg is lifted to a height of 3.5 m. How much gravitational potential energy is added to the piano? Accelerati

JulsSmile [24]

$m=852 \ kg \\ h=3,5 \ m \\ g=9,8 \ m/s^2 \\ \boxed{P_e-?} \\ \bold{Solving:} \\ \boxed{P_e=m \cdot g \cdot h} \\ P_e=852 \ kg \cdot 9,8 \ m/s^2 \cdot 3,5 \ m =8 \ 349,6 \ N \cdot 3,5 \ m \\ \Rightarrow \boxed{P_e=29 \ 223,6 \ J}$

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3 years ago

Why is the physics of hssc2 so difficult?

Ivan

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3 years ago

Read 2 more answers

A wire loop with 70 turns is formed into a square with sides of length ???? . The loop is in the presence of a 1.20 T uniform ma

Oksi-84 [34.3K]

Answer:

l= 3.002 cm

Explanation:

Given that

n= 70 turns

B= 1.2 T

θ= 15°

I= 1.5 A

τ = 0.0294 N⋅m

Lets take length of sides is l.

We know that

τ = n I A B sin θ

Area of square ,A= l²

Now by putting the value

τ = n I A B sin θ

0.0294 = 70 x 1.5 x l² x 1.2 x sin 15°

l² = 0.000901 m²

l² = 9.01 cm²

l= 3.002 cm

3 0

3 years ago

You push on a box with 100 N of force, causing it to accelerate at 5 m/s?.

Xelga [282]

<h3><u>Given</u><u>:</u><u>-</u></h3>

Force,F = 100 N

Acceleration,a = 5 m/s²

<h3><u>To</u><u> </u><u>be</u><u> </u><u>calculated:-</u><u> </u></h3>

Calculate the mass of the box .

<h3><u>Formula</u><u> </u><u>used:-</u><u> </u></h3>

$\bf \: Force = Mass \times Acceleration$

<h3><u>Solution:-</u><u> </u></h3>

$\sf \: Force = Mass × Acceleration$

★ Substituting the values in the above formula,we get:

$\sf \implies \: 100 = Mass \times 5$

$\sf \implies \: Mass = \cancel\dfrac{100}{5}$

$\sf \implies \: Mass = 20 \: kg$

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3 years ago

Read 2 more answers