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2 years ago

In ionic bonds what happens to electrons?

2 answers:

OverLord2011 [107]2 years ago

6 0

I think the correct answer from the choices would be that metals donate electrons to nonmetals. Ionic bonding involves transfer of valence electrons. The metal looses its valence electrons which makes it a cation while the nonmetal accepts these electrons.

kari74 [83]2 years ago

5 0

Answer:

Correct answer: metals donate electrons to nonmetals.

Explanation:

You might be interested in

How much time does it take light to travel from the moon to the earth, a distance of 384000 km?

Natali5045456 [20]

Answer:

1.28second

Explanation:

The speed of light is constant everywhere, it is

299,792,458m/s=299,792.458km/s

Therefore it takes

$\frac{384000}{299792458} = 1.28sec$

6 0

1 year ago

A lever allows a 35 N load to be lifted with a force of 7 N. What is the mechanical advantage of the lever?

Alex17521 [72]

Answer: MA = 5

Explanation:

The mechanical advantage is the ratio of the load to the effort. It is a measure of how efficient a simple machine is.

MA = Load/Effort

Load = 35N

Effort = 7N

Therefore

MA = 35N/7N

MA = 5

Since the mechanical advantage is more than 1, the lever is highly efficient as it allows a very small effort to overcome 5 times its magnitude of load.

7 0

3 years ago

a television of mass 8kg sits on a table the coefficient of static friction between the table and television is .48 what is the

Mama L [17]

Th normal reaction between the television and the table is
N = (8 kg)(9.8 m/s²) = 78.4 N

The static coefficient of friction is μ = 0.48.

When the television is about to slide on the table, the applied force should overcome the force due to static friction.

The applied force should be at least
F = μN
= 0.48*78.4
= 37.632 N

Answer: 37.6 N (nearest tenth)

3 0

2 years ago

The components of vector A are Ax and Ay (both positive), and the angle that it makes with respect to the positive x axis is θ.

DIA [1.3K]

Answer:

a) $\theta = tan^{-1} (\frac{11}{11})= tan^{-1} (1)=45$ degrees

b) $\theta = tan^{-1} (\frac{11}{19})= tan^{-1} (0.579)=30.07$ degrees

c) $\theta = tan^{-1} (\frac{19}{11})= 59.93$ degrees

Explanation:

If we have a vector $A= (A_x ,A_y)$ in a two dimensional space. The angle respect the x axis can be founded from the following expression:

$tan (\theta)= \frac{A_y}{A_x}$

And then the angle is given by:

$\theta = tan^{-1} (\frac{A_y}{A_x})$

Part a

Ax = 11 m and Ay = 11 m

For this case the angle would be:

$\theta = tan^{-1} (\frac{11}{11})= tan^{-1} (1)=45$ degrees

Part b

Ax = 19 m and Ay = 11 m

For this case the angle would be:

$\theta = tan^{-1} (\frac{11}{19})= tan^{-1} (0.579)=30.07$ degrees

Part c

Ax = 11 m and Ay = 19 m

For this case the angle would be:

$\theta = tan^{-1} (\frac{19}{11})= 59.93$ degrees

8 0

3 years ago

Read 2 more answers

A car starts from rest at a stop sign. It accelerates at 2.0 m/s2 for 6.7 seconds, coasts for 2.8 s , and then slows down at a r

Lisa [10]

Answer:

18.43m

Explanation:

At the initial stage, the car accelerates at 2.0 m/s² for 6.7 seconds, to get the velocity of the car at this point, we will use the equation of motion;

v = u + at

v = 0+(2.0)(6.7)

v = 13.4m/s

The velocity of the car during this time is 13.4m/s.

Also, if the car slows down at a rate of 1.5m/s², we can also calculate the time it took for the car to decelerate (check the attachment for diagram).

v = u+at

v = 0

u = 13.4m/s

a = -1.5m/s² (deceleration is negative acceleration)

0 = 13.4+-1,5t

-13.4 = -1.5t

t = 13.4/1.5

t = 8.93s

Hence it took the car 8.93s to slow down for the next stop sign.

To calculate how far apart the stop signs are, we need to calculate the total distance AD according to the diagram

Distance covered = AD = 18.43m

HENCE THE STOP SIGNS ARE 18.43m apart

4 0

2 years ago