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3 years ago

Create 3 interview questions for gravity regarding how it governs the motion of our solar system.

Physics

1 answer:

emmainna [20.7K]3 years ago

7 0

Answer:

How does gravity work?

Can gravity change forms?

How does gravity transform?

Explanation:

3 questions?

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PLEASE HELP ME IN THIS QUESTION!!!

kirill115 [55]

Answer:

Acceleration is 8.45 and the tension is 2.775

Explanation:

Lets apply the equation F=ma for vertical block,

5-T= 0.5a

foe the frictional force acting on the object,

f=0.11×5 (consider equation no.1)

=0.55N

Applying F=ma for the block which is on surface,

T-0.55=0.5a (consider as equation no.2)

no.1=no.2

5.55=2T

T=2.775

by equation no.1,

4.225=0.5a

a=8.45

8 0

3 years ago

- What is the mass of a bowling ball that weights 80 Newtons on Earth?

ch4aika [34]

I’d say it’s 8 or 80
Hopefully this helps sorry

3 0

3 years ago

Read 2 more answers

A student uses a stopwatch to measure the period of the pendulum of the Beverly clock in the corridor. His measurements are: (a)

Westkost [7]

Answer:

Reading is close to (b) 13.44 which is the best estimate of the period

Associated error, $\Delta E =0.178 s$

Given:

$t_{a} = 13.54 s$

$t_{b} = 13.44 s$

$t_{c} = 13.89 s$

$t_{d} = 13.41 s$

$t_{e} = 13.17 s$

$t_{f} = 13.22 s$

Solution:

1.The best estimate of the period can be calculated by the mean of the measurements and the one closest to the mean is the best estimate of the measurement:

$Mean, \bar {x} = \fra{sum of all observations}{No. of observation}$

$Mean, \bar {x} = \frac{t_{a} + t_{b} + t_{c} +t_{d} + t_{e} + t_{f}}{6}$

$Mean, \bar {x} = \frac{13.54 + 13.44 + 13.89 + 13.41 + 13.17 + 13.22}{6}$

$Mean, \bar {x} = 13.445 s$

It is close to 13.44 s

2. Associated error is given by:

$\Delta E_{n} = |measured value - actual value|$

$\Delta E_{n} = |t_{n} - \bar {x}|$

where

n = a, b,......, e

Now,

$\Delta E_{a} = |t_{a} - \bar {x}| = |13.54 - 13.44| = 0.01$

$\Delta E_{b} = |t_{b} - \bar {x}| = |13.44 - 13.44| = 0.00$

$\Delta E_{c} = |t_{c} - \bar {x}| = |13.89 - 13.44| = 0.45$

$\Delta E_{d} = |t_{d} - \bar {x}| = |13.41 - 13.44| = 0.03$

$\Delta E_{e} = |t_{e} - \bar {x}| = |13.17 - 13.44| = 0.027$

$\Delta E_{f} = |t_{f} - \bar {x}| = |13.54 - 13.44| = 0.10$

Mean Absolute Error, $\Delta E = \frac{\Sigma E_{n}}{6}$

$\Delta E = \frac{0.01 + 0.00 + 0.45 + 0.03 +0.027 + 1.10}{6}$

$\Delta E =0.178 s$

3. The assumption behind the estimation is population is considered to distributed normally.

6 0

3 years ago

Please help fast due next period!!!

OLga [1]

Answer:

The chemical formula for zinc (III) phosphide is Zn3P2

3 0

3 years ago

An object has an x-momentum of 8.5 kilogram-meters/second and a -momentum of 9.8 kilogram meters/second. What Is resultänt

ahrayia [7]

Answer:

<em>The resultant momentum is 12.97 kg.m/s. Choice: c</em>

Explanation:

<u>Momentum</u>

The momentum is a vector that measures the quantity of motion that an object has. It's also known by the term "mass in motion".

As a vector, it can be expressed by its rectangular components:

$\vec p = p_x\mathbf{i}+p_y\mathbf{j}$

The magnitude of the momentum is:

$\mid \mid \vec p \mid \mid =\sqrt{p_x^2+p_y^2}$

The object described has an x-component of:

px=8.5 Kg.m/s

And a y-component of:

py=9.8 Kg.m/s

Thus, the magnitude of the momentum is:

$\mid \mid \vec p \mid \mid =\sqrt{8.5^2+9.8^2}$

$\mid \mid \vec p \mid \mid =\sqrt{72.25+96.04}$

$\mid \mid \vec p \mid \mid =\sqrt{168.29}$

$\mid \mid \vec p \mid \mid =12.97$

The resultant momentum is 12.97 kg.m/s. Choice: c

3 0

3 years ago