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kenny6666 [7]
4 years ago
9

Which of the following represents a covalent compound? KF NaCl SBr3 Mg2O

Physics
1 answer:
slava [35]4 years ago
5 0

Answer:

SBr3 is a covalent compound

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A baseball is hit into the air with a velocity of 27 m/s. How high does it go?
Marizza181 [45]

Answer:

Explanation:

If a baseball is hit into the air with a velocity of 27 m/s, we want to determine the maximum height of the ball. Using the projecile formula;

Max height H = u²/2g

u is the initial velocity of the body = 27m/s

g is the acceleration due to gravity = 9.81m/s²

H = 27²/2(9.81)

H = 729/19.62

H = 37.16m

Hence the ball went 37.16m high

8 0
3 years ago
What is the magnification of a virtual image if the image is 10.0 cm from a lens and the object is 30 cm from the lens
7nadin3 [17]

Answer:

The magnification of a virtual image is -0.33

Explanation:

We can calculate the magnification as the ratio of height of the image to the height of the object. It can be also stated as the ratio of size of the image obtained to the original size of the object. Also this ratio can be equated to the ratio of image distance to object distance. So magnification can be termed as ratio of image distance to object distance. As in the present case, the image distance or the distance of the formation of image from the lens is 10 cm and the distance of object from the lens or the object distance is 30 cm. Then, Magnification =-\frac{Image distance}{Object distance}=-\frac{10}{30}=-0.33.

So, the image will be diminished to 0.33 times the original size as the magnification of the virtual image is obtained as -0.33.

5 0
4 years ago
Read 2 more answers
If matter cannot be created nor destroyed the how was matter created
Assoli18 [71]
It can’t be created nor destroyed although it can be changed from one form to the other

I hope this helps

Have a happy holidays:)
7 0
3 years ago
A steel bridge is 1000 m long at -20°C in winter. What is the change in length when the temperature rises to 40°C in summer? The
xenn [34]

Answer:

ΔL = 0.66 m

Explanation:

The change in length on an object due to rise in temperature is given by the following equation of linear thermal expansion:

ΔL = αLΔT

where,

ΔL = Change in Length of the bridge = ?

α = Coefficient of linear thermal expansion = 11 x 10⁻⁶ °C⁻¹

L = Original Length of the Bridge = 1000 m

ΔT = Change in Temperature =  Final Temperature - Initial Temperature

ΔT = 40°C - (-20°C) = 60°C

Therefore,

ΔL = (11 x 10⁻⁶ °C⁻¹)(1000 m)(60°C)

<u>ΔL = 0.66 m</u>

6 0
4 years ago
ASAP Even though the force exerted on each object in a collision is the same strength, if the objects have different masses, the
tatuchka [14]

Answer:

it should be changes in velocity

Explanation:

I hope this helps!

8 0
3 years ago
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