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4 years ago

Which describe the image formed by a convex mirror? Check all that apply.

Physics

2 answers:

belka [17]4 years ago

7 0

Answer:

smaller than the object

Explanation:

The rest are incorrect; It has an upright image.

ycow [4]4 years ago

3 0

Answer: Smaller Than the object and right-side up

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What is the density of a substance of volume 3 m3and mass 9 kg?

butalik [34]

Answer:

Density = 3 kg/m³

Explanation:

Given the following data;

Volume = 3m³

Mass = 9 kg

To find the density;

Density can be defined as mass all over the volume of an object.

Simply stated, density is mass per unit volume of an object.

Mathematically, density is given by the formula;

$Density = \frac{mass}{volume}$

Substituting into the formula, we have;

$Density = \frac{9}{3}$

Density = 3 kg/m³

7 0

3 years ago

What is an example of a wave that is not mechanical and how is it different?

vovikov84 [41]

Answer:

light is an example of a wave that is not mechanical .

it is different as it does not need material medium for its propagation

5 0

3 years ago

What constant acceleration in si units must a car have to go from zero to 60 mph in 10s. what fraction of g is this?

Sophie [7]

The acceleration of the car in SI units is 2.68m/s².

The acceleration is 0.27 times the acceleration due to gravity g.

Convert the speed in mph into m/s.

1 mile = 1609 m and 1h = 3600 s.

Therefore,

$v=(\frac{60 miles}{1 h} )(\frac{1609 m}{1 mile} )(\frac{1h}{3600s)} =26.82m/s$

Acceleration is the rate of change of velocity. The car starts from rest , its initial velocity u = 0 and accelerates to a velocity v of 26.82 m/s in 10 s.

Use these values in the equation and calculate the acceleration.

$a=\frac{v-u}{t} \\ =\frac{(26.82 m/s)-(0m/s)}{10s} \\ =2.682 m/s^2$

Thus the car accelerates at a rate of 2.68 m/s².

The acceleration due to gravity g on Earth has a value 9.81 m/s².

Find the ratio $\frac{a}{g}$

$\frac{a}{g} =\frac{2.682m/s^2}{9.81m/s^2} \\ =0.27
a=0.27g$

The car's acceleration is 0.27 times the value of g.

3 0

3 years ago

Which of the device has the highest resistance?

-BARSIC- [3]

It would be c) Rheostat

5 0

3 years ago

Read 2 more answers

You just calculated that the heat of fusion for chloromethane is 6400 J/mol. The heat of fusion for hydrogen is 120 J/mol. Which

makkiz [27]

Answer:

Chloromethane experiences dipole-dipole interactions.

Chloromethane has a higher molar mass than hydrogen.

Explanation:

The molar mass is directly proportional to the heat of fusion, since the heavier the molecules the more energy they need to separate. Intermolecular forces are also directly proportional to the heat of fusion, because the greater the interaction they experience, the more energy they require to separate. The dipole-dipole interactions experienced by chloromethane are stronger than the interactions that take place in hydrogen.

4 0

3 years ago