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4 years ago

An atomic scientist was studying an atom and through experimentation found that the total negative charge of the

Physics

1 answer:

Artist 52 [7]4 years ago

7 0

Answer:

This atom has nine electrons

Explanation:

I just did it and I got it right.

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Anybody know the answer??

omeli [17]

Answer:

Centimeter

Explanation:

We know the measurement is defined as:

1 meter= 100cm

1 cm= 1/100 meter

1 centimeter= 0.01 meter

Therefore, 0.01 meter is equal to 1 cm or 1 centimeter.

6 0

3 years ago

Read 2 more answers

A 1470-kilogram truck moving with a speed of 27.0 m/s runs into the rear end of a 1010-kilogram stationary car. If the collision

Gre4nikov [31]

Answer:

$\Delta KE = 218.375\ kJ$

Explanation:

Given,

Mass of the truck, M = 1470 Kg

initial speed of the truck, u = 27 m/s

mass of car, m = 1010 Kg

initial speed of car, u' = 0 m/s

Final speed, V = ?

Using conservation of momentum

$Mu = (M+m) V$

$1470\times 27 = (1470 + 1010 ) V$

$V = 16\ m/s$

Change in kinetic energy

$\Delta KE = \dfrac{1}{2} Mu^2 - \dfrac{1}{2}(M+m)V^2$

$\Delta KE = \dfrac{1}{2}\times 1470\times 27^2 - \dfrac{1}{2}\times (1470 + 1010)\times 16^2$

$\Delta KE = 218.375\ kJ$

Change in KE = $\Delta KE = 218.375\ kJ$

3 0

3 years ago

A man pushed a cabinet with a force of 200N. What is the mass of the cabinet that accelerates 4 m/s/s?

ELEN [110]

Answer:

$\boxed {\boxed {\sf 50 \ kg}}$

Explanation:

We are asked to find the mass of a cabinet, given the force and acceleration. According to Newton's Second Law of Motion, force is the product of mass and acceleration. The formula for this is:

$F= m \times a$

The force is 200 Newtons, but we should convert the units to make unit cancellation easier. 1 Newton is equal to 1 kilogram meter per second squared, so the force of 200 Newtons is 200 kilogram meters per second squared.

The mass is unknown and the acceleration is 4 meters per second per second or 4 meters per second squared.

F= 200 kg*m/s²
a= 4 m/s²

Substitute the values into the formula.

$200 \ kg *m/s^2 = m \times 4 \ m/s^2$

We are solving for the mass, m, so we must isolate the variable. It is being multiplied by 4 meters per second squared. The inverse operation of multiplication is division. Divide both sides by 4 m/s²

$\frac {200 \ kg *m/s^2}{4 \ m/s^2}= \frac{m \times 4\ m/s^2}{4 \ m/s^2}$

$\frac {200 \ kg *m/s^2}{4 \ m/s^2} =m$

The units of meters per second squared cancel.

$\frac {200 \ kg }{4 }=m$

$50 \ kg =m$

The mass of the cabinet is <u>50 kilograms.</u>

5 0

3 years ago

You are walking down a straight path in a park and notice there is another person walking some distance ahead of you. The distan

xenn [34]

Answer:

41.07 m

Explanation:

According to the data:

Velocity = 2.65 m/s

Time = 15.5 s

Now the formula to calculate the distance is

Distance = Velocity x Time

Distance = 2.65 x 15.5

Distance = 41.07 meter

Kindly note that the person suddenly started to run at the velocity which is mentioned later that is 2.65 m/s.So the velocity given before is just ignored and we don't have to use any of the three equations of motion of kinematics.

3 0

3 years ago

The density (mass divided by volume) of water is 1.00 g/cm3 . What is this value in kilograms per cubic meter?

ArbitrLikvidat [17]

1.00g/cm3= 0.001/cm3 = 0.001kg/ 0.000001m3= 1000kg/m3

3 0

4 years ago