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3 years ago

What gives an atom its charge?

2 answers:

5 0

An atom with a neutral charge is one where the number of electrons is equal to the atomic number

hope i helped

givi [52]3 years ago

4 0

A Neutral, stable atom has no charge as it has an equal number of Protons and Electrons. An Atom gains a charge by the loss or gain of electrons thus becoming an Ion. The loss of 1 or more electrons will give the atom a Positive charge (now having more Protons then Neutrons) and becomes a Positive Ion (or Cation). hope that helped

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Flashlight has resistance of 2.4 what voltage is applied by the batteries if the current is 2.5a

Sergeeva-Olga [200]

Answer:

6 voltage is applied by the batteries.

Explanation:

To solve this sort of problem involving current, resistance and voltage, we use the relation: Voltage= Current x Resistance.

From the problem, the following have been given:

Resistance= 2.4 ohms.

Current= 2.5 amps.

Required: Voltage?

Fix the values of current and resistance into the relation:

Voltage= 2.5 x 2.4

=6 volts.

5 0

3 years ago

31. If you threw a baseball straight out at 45 m/s from a height of 1.5 meters (A) how long would it be in the air? B) How far o

coldgirl [10]

Answer:

A) t = 0.55 s

B) x = 24.8 m

Explanation:

A) We can find the time at which the ball will be in the air using the following equation:

$y_{f} = y_{0} + v_{0y}t - \frac{1}{2}gt^{2}$

Where:

$y_{f}$ is the final height= 0

$y_{0}$ is the initial height= 1.5 m

$v_{0y}$ is the component of the initial speed in the vertical direction = 0 m/s

t: is the time =?

g: is the gravity = 9.81 m/s²

$0 = 1.5 m - \frac{1}{2}9.81 m/s^{2}t^{2}$

By solving the above equation for t we have:

$t = \sqrt{\frac{2*1.5 m}{9.81 m/s^{2}}} = 0.55 s$

Hence, the ball will stay 0.55 seconds in the air.

B) We can find the distance traveled by the ball as follows:

$x_{f} = x_{0} + v_{0x}t + \frac{1}{2}at^{2}$

Where:

a: is the acceleration in the horizontal direction = 0

$x_{f}$ is the final position =?

$x_{0}$ is the initial position = 0

$v_{0x}$ is the component of the initial speed in the horizontal direction = 45 m/s

$x_{f} = x_{0} + v_{0x}t + \frac{1}{2}at^{2}$

$x_{f} = 0 + 45 m/s*0.55 s + 0 = 24.8 m$

Therefore, the ball will travel 24.8 meters.

I hope it helps you!

3 0

3 years ago

An athlete walks 8 meters East , 2 meters South, 8 meters West, and finally 2 meters North. What is the total distance traveled?

serg [7]

Explanation:

20 meters is travelled by him

please mark me as brainliest

6 0

1 year ago

Read 2 more answers

Which energy store is increased when an object is heated?

agasfer [191]

Answer:

Kinetic Energy

Explanation:

3 0

3 years ago

Electrical work on a project cannot start until all of the electrical supplies have arrived on site. The relationship between th

BARSIC [14]

Answer:

Explanation:

Finish-Start

Finish to Start is a Logical Relationship in which a Successor Activity cannot start until a Predecessor Activity has finished. What it really means in simple terms we can say that, the Start of a Successor Activity is Dependent on Finish of the Predecessor Activity.

The acquisition of all supplies which is the predecessor activity must finish before the electicalmwork can start which is the successor activity.

7 0

3 years ago