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The image produced by an object is –10. 0 cm from a concave mirror that has a focal length of 5. 0 cm. The distance of the objec

Anon25 [30]

The distance of the object from the mirror is 3cm.

To calculate the distance of the object from the mirror, we make use of the mirror formula

<h3>Mirror formula</h3>

1/f = (1/u)+(1/v)............ Equation 1

Where:

f = Focal length of the mirror
v = image distance
u = object distance.

Using the real is positive convention,

Given:

f = 5 cm
v = -10 cm

Substitute these values into equation 1 and solve for u

1/5 = (-1/10)+(1/u)
1/5+(1/10) = 1/u
1/u = (2+1)/10
1/u = 3/10
u = 10/3
u = 3.33
u = 3 cm

Hence, The distance of the object from the mirror is 3cm.

Learn more about mirror formula here: brainly.com/question/26257987

7 0

1 year ago

For how many three digit numbers (100 to 999) is the sum of the digits even?.

attashe74 [19]

The digital sum of a 3-digit number is even if

• all 3 of its digits are even, or

• 2 of its digits are odd and 1 is even

Count the number of 3-digit numbers, all of whose digits are even:

• the first digit cannot be 0, and otherwise has 4 options (2, 4, 6, or 8)

• the second and third digits each have 5 options (2, 4, 6, 8, or 0)

So there are 4 × 5² = 100 such numbers.

Count the number of 3-digit numbers with 2 odd digits and 1 even digit:

• if the first digit is even, then there are 4 options (2, 4, 6, or 8), and the other two digits each have 5 options (1, 3, 5, 7, or 9)

• if the first digit is odd, then there are 5 options (1, 3, 5, 7, or 9); if the second digit is also odd, it has the same 5 options; then the third digit is even and has 5 options (2, 4, 6, 8, or 0)

Swapping the second and third digits in the last case gets the same amount of numbers; we're effectively multiplying by the number of permutations of 2 objects taken 2 at a time, 2!.

So there are 4 × 5² + 2! × 5³ = 350.

Then there is a total of 450 3-digit numbers whose digital sums are even.

7 0

2 years ago

Acetylene, c2h2 c 2 h 2 , can be converted to ethane, c2h6 c 2 h 6 , by a process known as hydrogenation. the reaction is c2h2(g

Nana76 [90]

The value of the Kp is obtained from Kp = p.C2H6/p.C2H2 * pH2^2 as 1.

The Kp is the equilibrium constant for a gas phase reaction we have to put down the equation for the Kp here as; Kp = p.C2H6/p.C2H2 * pH2^2.

We are told here that all the pressures are equal to 1 atm hence we substitute values; Kp = 1/1 ( (1)^2 =1

Learn more about Kp: brainly.com/question/22074421

4 0

1 year ago

Producers often work to maximize their and make them as large as possible.

yKpoI14uk [10]

Producers often work to maximize product to maximize profit with cause and effect

6 0

2 years ago

Read 2 more answers

How is the temperature of a substance related to the kinetic energy of its molecules? select all that apply.

saul85 [17]

The kinetic energy is proportional to the temperature.

<h3>What is the relation between temperature and kinetic energy?</h3>

So first, we know that the kinetic energy of an object is given by:

K = (1/2)*m*v^2

Where v is the velocity and m is the mass.

We know that substances are made of molecules, and these molecules are tiny objects that move. As the temperature increases, you should see that the speed of motion of these particles increases (this is why dilation happens). So, if the velocity increases, then also increases the kinetic energy of the molecules in the substance.

The thermal velocity is approximated by:

$v = \sqrt{(k/m)*T}$

Where (k/m) is a constant, now, if you replace that in the kinetic energy equation, you can see that the kinetic energy is proportional to the temperature.

If you want to learn more about temperature, you can read:

brainly.com/question/21222010

5 0

1 year ago