3 years ago

Would a pair of scissors with really long blades and a short handle be practical? Why or why not?

Physics

1 answer:

Lana71 [14]3 years ago

6 0

Yes, for balance.hope this helped.

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What is the impulse of a 2 kg object that starts at 10 m/s and comes to a stop over 0.4 seconds?

gizmo_the_mogwai [7]

Answer: Impulse = 20 Ns

Explanation:

Impulse is the product of force and time

Also impulse = momentum

Where momentum is the product of mass and velocity.

Given that

M = 2kg

V = 10 m/s

Impulse = MV = 2 × 10 = 20 Ns

8 0

3 years ago

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3 years ago

An athelete runs some distance before taking a long jump because : give answer

insens350 [35]

Hi Pupil Here's your answer ::

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An Athelete run some distance before taking a long jump because by running the Athelete gives himself larger inertia of motion.

⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅

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3 0

4 years ago

You are skateboarding in your friend's driveway. You hit a rock and your

nekit [7.7K]

Answer:

the rock hit the board you go flying because you board stops but you have energy still going so there for you go flying

Explanation:

3 0

3 years ago

Two spheres are cut from a certain uniform rock. One has radius 4.10 cm. The mass of the other is eight times greater.

Misha Larkins [42]

Answer:

8.2 cm

Explanation:

mass of one sphere = m

mass of other sphere = 8 m

Radius of first sphere = r = 4.10 cm

let the radius of another sphere is R

As we know that mass = volume x density

Let the density of the rock is d.

density of rock remains same.

density of small sphere = density of big sphere

mass of small sphere / volume of small sphere =

mass of big sphere / volume of big sphere

$\frac{m}{\frac{4}{3}\pi r^{3}}=\frac{8m}{\frac{4}{3}\pi R^{3}}$

$R^{3}=8r^{3}$

R = 2 r

R = 2 x 4.10 = 8.2 cm

Thus, the radius of big sphere is 8.20 cm.

7 0

3 years ago