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3 years ago

An object with more mass has more kinetic energy than an object with less mass, if both objects are moving ____.

2 answers:

6 0

An object with more mass has more kinetic energy than an object with less mass, if both objects are moving at the same speed. <em>(c)</em>

creativ13 [48]3 years ago

4 0

Answer:

c. at the same speed

Explanation:

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PLEASE HELP - In running a ballistics test at the police department, Officer Rios fires a 6.1g bullet at 350 m/s into a containe

Arlecino [84]

Answer:

–0.11 N.

Explanation:

From the question given above, the following data were obtained:

Mass (m) = 6.1 g

Initial velocity (u) = 350 m/s

Time (t) = 0.32 mins

Final velocity (v) = 0 m/s

Force (F) =?

Next, we shall convert 0.32 mins to seconds. This can be obtained as follow:

1 min = 60 s

Therefore,

0.32 mins = 0.32 × 60 = 19.2 s

Next, we shall determine the acceleration of the the bullet. This can be obtained as follow:

Initial velocity (u) = 350 m/s

Time (t) = 19.2 s

Final velocity (v) = 0 m/s

v = u + at

0 = 350 + (a × 19.2)

0 = 350 + 19.2a

Collect like terms

0 – 350 = 19.2a

–350 = 19.2a

Divide both side by 19.2

a = –350 / 19.2

a = –18.23 m/s²

Next, we shall convert 6.1 g to Kg.

1000 g = 1 Kg

Therefore,

6.1 g = 6.1 g × 1 Kg / 1000 g

6.1 g = 0.0061 Kg

Finally, we shall determine the force. This can be obtained as follow:

Mass (m) = 0.0061 Kg

Acceleration (a) = –18.23 m/s²

Force (F) =?

F = ma

F = 0.0061 × –18.23

F = –0.11 N

NOTE: The negative sign indicates that the force is in opposite direction.

8 0

3 years ago

Read 2 more answers

Use the formula t = (0.25) s1/2 to find the time t in seconds it will take a stone to drop a distance s of 200 feet. Round your

blondinia [14]

Answer:

Time taken, t = 3.53 seconds

Explanation:

It is given that,

The formula for calculating the time t is given by :

$t=(0.25)s^{1/2}$ ...... (1)

Where

s is the distance in feets

We need to find the time taken by the stone to drop a distance of 200 feets, s = 200 feets

Put the value of s in equation (1) such that,

$t=(0.25)\times (200)^{1/2}$

t = 3.53 seconds

So, the time taken by the object is 3.53 seconds. Hence, this is the required solution.

4 0

3 years ago

Find the work done "by" the electric field on a positively charged point particle with a charge of 2.1x10^-6 C as it is moved fr

Alexxx [7]

Answer

Work done will be $14.7\times 10^{-6}J$ and it will be positive

Explanation:

We have given charge $2.1\times 10^{-6}C$

We have to find work done in moving the charge from 15 volt to 8 volt

Let $V_1=15V\ and\ V_2=8volt$

So potential difference $V=V_1-V_2=15-8=7volt$

We know that work done $W=QV$ , here Q is charge and V is potential difference

So work done $W=QV=2.1\times 10^{-6}\times 7=14.7\times 10^{-6}J$

It will be positive work done because work is done in moving charge from higher potential to lower potential

5 0

4 years ago

In a periodic table a set of properties repeats from?

bogdanovich [222]

Answer;

Row to row

In a periodic table a set of properties repeats from row to row

Explanation;

In a periodic table, a set of properties repeats from row to row. This is called the periodic law. In the periodic table, the rows are called periods and the columns are called groups.

The modern periodic table is organized by increasing atomic number. The atomic mass unit is based on 1/12th the mass of a carbon-12 atom.

The atomic mass of an element is the weighted average of the masses of an element’s isotopes.

8 0

3 years ago

Read 2 more answers

A ball rolls from point A to point B. The total energy of the ball at point A isn’t the same as the sum of its potential energy

rusak2 [61]

Answer:

option b

Explanation:

because the law of conservation

it means that energy can never created nor be destroyed

even it will change into another form if energy

7 0

3 years ago