1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bogdan [553]
3 years ago
9

The electrical charge on an atom as a whole is A) negative. B) neutral. C) positive. D) dependent upon the atomic number. 25)

Physics
2 answers:
babymother [125]3 years ago
8 0

Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion. If it gains one or more electrons, it now carries a net negative charge, and is thus "anionic."

vladimir1956 [14]3 years ago
4 0

Answer:

B) neutral.

Explanation:

You might be interested in
Explain why does the bowling ball decelerate as it travels along the lane
frutty [35]

The main cause of this is Friction. The more oil that is laid down, the less friction there is between the ball and the lane surface. The less friction, the harder it is for the bowler to send the ball in a curved path imparted by the spin that the bowler puts on the ball at the instant of release.

5 0
3 years ago
Give a example of scalar quantity
Serhud [2]

speed, volume, mass, temperature and power

7 0
3 years ago
Read 2 more answers
Help with question 16 and 17
storchak [24]
<h3>16.</h3>

Your answer is correct.

___

<h3>17.</h3>

The fractional change in resistance is equal to the given temperature coefficient multiplied by the change in temperature.

  R = R₀×(1 + α×ΔT)

  R = (10.0 Ω)×(1 + 0.004×(65 -20)) = 11.8 Ω

5 0
3 years ago
An object is thrown upward with some velocity. If the object rises 77.5 m above the point of release, (a) how fast was the objec
jolli1 [7]

Answer:

v_o=39\ m/s\\t_m=4\ s

Explanation:

<u>Vertical Launch Upwards</u>

In a vertical launch upwards, an object is launched vertically up from a height H without taking into consideration any kind of friction with the air.

If vo is the initial speed and g is the acceleration of gravity, the maximum height reached by the object is given by:

\displaystyle h_m=H+\frac{v_o^2}{2g}

The object referred to in the question is thrown from a height H=0 and the maximum height is hm=77.5 m.

(a)

To find the initial speed we solve for vo:

\displaystyle v_o=\sqrt{2gh_m}

v_o=\sqrt{2\cdot 9.8\cdot 77.5}

v_o=39\ m/s

(b)

The maximum time or the time taken by the object to reach its highest  point is calculated as follows:

\displaystyle t_m=\frac{v_o}{g}

\displaystyle t_m=\frac{39}{9.8}

t_m=4\ s

7 0
2 years ago
A 47.2 kg girl is standing on a 177 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat,
Softa [21]

Answer:

v_g,i = 1.208 m/s

Explanation:

We are given;

Mass of girl; m_g = 47.2 kg

Mass of plank; m_p = 177 kg

Let the velocity of girl to ice be v_g,i

Let the velocity of plank to ice be v_p,i

Since the velocity of the girl is 1.53 m/s relative to the plank, then;

v_g,i + v_p,i = 1.53

From conservation of momentum;

m_g × v_g,i = m_p × v_p,i

Thus;

47.2(v_g,i) = 177(v_p,i)

Dividing both sides by 47.2 gives;

v_g,i = 3.75(v_p,i)

v_pi = (v_g,i)/3.75

Thus, from v_g,i + v_p,i = 1.53, we have;

v_g,i + ((v_g,i)/3.75) = 1.53

v_g,i(1 + 1/3.75) = 1.53

1.267v_g,i = 1.53

v_g,i = 1.53/1.267

v_g,i = 1.208 m/s

5 0
3 years ago
Other questions:
  • Calculate the kinetic energy of a 0.145-kg baseball with a velocity of 80 mil/h. Express the answer in Joules.
    5·1 answer
  • How is the charge produced by a single Electron different to that of a Proton (if at all)?
    5·1 answer
  • Is an electron an antiparticle, boson, lepton, or hadron?
    6·1 answer
  • What material resists the flow of electrons but will allow some electrons to flow?
    14·2 answers
  • a wire with mass per unit length 75 g/m runs horizontally at right angles to a uniform horizontal 0.12 T magnetic field. what am
    7·1 answer
  • You are given $1000.00 but you must spend 1/2 the first year, and 1/2 the balance for each year thereafter. If you spend the max
    12·1 answer
  • An oscillator consists of a block attached to a spring (k = 427 N/m). At some time t, the position (measured from the system's e
    15·1 answer
  • The magnitude of a uniform electric field between two plates is about 1.7 × 106N/C. If the distance
    6·1 answer
  • Sa paanong paraan moipinapakita ang iyong pakikiisa sa nga gawaing nag papakita Ng kabutihang panlahat?
    14·1 answer
  • 12. Suppose a person is covered head to foot by wool clothing with average thickness of 2.00 cm and is transferring energy by co
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!