Why is the size of a telescope's lens or mirror important for gathering information about distant objects?A. Because magnification is better with smaller lenses.B. Because big telescopes are hard to manage.C. Because the goal is to gather as much electromagnetic radiation as possible.

The focal length of the lens is 2m and the position of the image is 6 m.

The size of the image formed depends on the position of the object from the lens.

\(M = \frac{v}{u}\)

where;

The image distance is calculated as follows;

\(2 = \frac{v}{3} \\\\v = 2(3) \\\\v = 6 \ m\)

The focal length of the lens is calculated as follows;

\(\frac{1}{f} = \frac{1}{v} + \frac{1}{u}\\\\\frac{1}{f} = \frac{1}{6} + \frac{1}{3} \\\\\frac{1}{f} = \frac{3}{6} \\\\f = 2m\)

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Answer:

B. is your answer

Explanation:

Have a good day

Sincerly, lipor

Short, difficult activities that push your body are called anaerobic activities.  Option b is correct

They are high-intensity exercises that do not require oxygen and primarily use stored energy sources within the muscles. Examples include weightlifting or sprinting.

Short, difficult activities that push your body are called anaerobic activity. Anaerobic activities are high-intensity exercises that do not require oxygen and primarily use stored energy sources within the muscles, such as weightlifting or sprinting. These activities help build muscle strength and improve power and speed.

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The final momentum is 25 Kg m/s

In physics, momentum is a measure of an object's motion, calculated by multiplying the object's mass by its velocity. Mathematically, momentum is represented by the symbol "p" and can be expressed as:

p = mv

where "p" is momentum, "m" is mass, and "v" is velocity. Momentum is a vector quantity, meaning that it has both a magnitude (the amount of momentum) and a direction (the direction of the motion).

Given that;

Ft = mv - mu

It then follows that;

F = force

m = mass

v and u are the initial and the final velocities

Thus;

5 * 5 = 5v

v = 25/5

= 5 m/s

The final momentum is thus;

5 m/s * 5 Kg

= 25 Kg m/s

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The impact of the imagery used in paragraph six on the meaning of "On a Mountain Trail" emphasizes the fear and uncertainty of the narrator as the pack surrounds the sleigh on the trail.

The imagery in paragraph 6 paints a vivid and powerful picture of a pack of wolves surrounding the sled. Because of the narrator's inability to count the number of wolves present, this description adds to the feeling of anxiety and uncertainty. The scene reinforces the emotional impact of the scene and helps convey the protagonist's sense of vulnerability and danger.

Therefore, the correct option is C.

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The time taken for the box to get to the storage area, given that the box is moving at a constant velocity of 40 meters per minute is 0.2 minutes

Speed is defined as the distance travelled per time as shown below:

Speed = Distance / time

Cross multiply

Speed × time = distance

Divide both sides by speed

Time = Distance / speed

The following data were obtained from the question:

The time take can be obtained as follow:

Time = Distance / speed

Time = 8 / 40

Time = 0.2 minutes

Thus, the time taken to get the storage area is 0.2 minutes

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Answer:

Pt 1: \(W=39J\)

Pt 2: θ = \(19.7\)

Explanation:

Part 1:

\(W=FS\)

\(W=F_{_xs_x}+F{_ys_y}\)

imagine the "i"and the "j" with the hat

\(W=(10i-1j)(4i+3j)\)

\(W=(10*4)-(1*1)\)

\(W=40-1\)

\(W=39J\)

Part 2:

\(|F|=\sqrt{10^2+(-1)^2}\)

\(|F|=\sqrt{101}\)

\(|S|=\sqrt{4^2+1^2}\)

\(|S|=\sqrt{17}\)

\(W=|F||S|cos\)θ

\(39=(\sqrt{101})(\sqrt{17} )cos\)θ

θ = \(19.7\)

Hope it helps

In order for the clown to land unharmed, the other clowns should hold the net at a point along the trajectory of the clown that is equal to the launch height of the clown.

The point can be calculated using the following equation:

Distance = velocity × time

Where velocity = 40 m/s and time = 2(velocity × sin(60o))/9.8 (where 9.8 is gravitational acceleration).

Therefore, the distance = 40 m/s × 2(40 m/s sin(60o))/9.8 = 80 m.

The other clowns should aim to place the net at a point that is 80 meters away from the cannon and at a height of 40 meters. This point should correspond to the apex of the trajectory, which is the highest point that the clown will reach when launched. The clowns should also make sure that the net is held at an angle of 30 degrees with respect to the horizontal, to ensure that the clown lands safely at the same level where it was launched.

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Answer:

my answer is letter b ithink

Answer: It is Reflection

Explanation: Reflection occurs when incoming solar radiation bounces back from an object or surface that it strikes in the atmosphere, on land, or water, and is not transformed into heat.

Answer:

Given that,  

Speed = v  

Radius = r  

We have to ascertain the precise speed  

Utilizing equation of speed  

Where, v = velocity/speed

r = radius  

= precise speed/ angular velocity

Angular Velocity :  

The precise speed is characterized by the speed of turn.  

The precise speed is straightforwardly corresponding to the direct speed and contrarily relative to the range of the molecule.  

Subsequently, The precise speed is v/r

The cost of operation for an A.C for 10 hours per day for a month will be 71,100 francs.

Power is the amount of energy transferred or converted per unit time. The unit of power is the watt, equal to one joule per second. Power is a scalar quantity.

Cost of operation for 10 hours a day;

Daily consumption = 3kW x 10 hours

Daily Consumption = 30kW

Since 1kWH = 79 francs;

Daily consumption amount = 30 x 79 francs

Daily consumption amount = 2,370 francs

Therefore, the monthly consumption (using 30days) will be;

2,370 francs x 30 = 71,100 francs

In conclusion, 71,100 francs will be spent in a month (30 days) to run the 3kW rated A.C for 10 hours a day at 1kWH.

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Any weapon that loads its bullet and propellant charge from the muzzle is referred to as a muzzleloader. This is separate from the more advanced and complex current breech-loading weapon designs.

Simply said, a muzzle loader is a firearm that loads through the muzzle and is generally lengthy. A spring-loaded arm that hits a replaceable piece of flint on a metal plate to produce sparks, which ignite the gunpowder and light the gun, is the firing mechanism known as a flintlock.

French artist and inventor Marin Le Bourgeoys, who flourished in the Renaissance from 1550 to 1634, is credited with creating the muzzle-loaded rifle.

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Answer:

Electrical energy and Chemical energy

Explanation:

Good luck on the quiz dawg, I'm doing the same one LOL

Answer:

Impulse  = 0.5Ns

Explanation:

F = 50N

t = 0.01s

Impulse = ?

Impulse = Force * t,

Impulse = 50N * 0.01s = 0.5Ns

Answer:

Answer:

D

Explanation:

the amount of potential energy is dependents on the weight and the hight and gravitational energy being forced onto a object.

Answer:

The processes of photosynthesis and respiration are interrelated because the products of such processes are used as reactants for one process. One product of photosynthesis is oxygen. This oxygen is used in the process of respiration as a reactant producing carbon dioxide which is used as a reactant for photosynthesis.

Answer:

The maximum speed of the stone without breaking the rope is 4.33 m/s.

Explanation:

Given;

maximum tension the rope can withstand, T = 75 N

mass of the rock, m = 6 kg

radius of the circle, r = 1.5 m

As the stone spin in a vertical circle, it performs circular motion with centripetal acceleration directed inwards. The maximum centripetal force during this motion will be equal to maximum tension on the rope.

\(F_c,_m_a_x = T = \frac{MV_m_a_x^{2} }{r}\\\\V_m_a_x^{2} = \frac{Tr}{M}\\\\V_m_a_x = \sqrt{\frac{75*1.5}{6}}\\\\V_m_a_x = 4.33 \ m/s\)

Therefore, the maximum speed of the stone without breaking the rope is 4.33 m/s.

The distance of the image formed by the lens is at 10.7 cm on the ruler.

option C.

The distance of the image is calculated by applying lens formula as shown below;

1/f = -1/u + 1/v'

where;

From the diagram, the focal length of the lens = 8.5 cm

the object distance = 3 cm

The image distance is calculated as follows;

1/v' = 1/f + 1/u

1/v' = 1/8.5 + 1/3

1/v' = 0.45

v' = 1/0.45

v' = 2.21 cm

The position of the image on the rule is calculated as follows;

v = v'  +  8.5 cm

v = 2.21 cm + 8.5 cm

v = 10.71 cm

Thus, the ray - diagram shows the position or distance of the image formed.

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Answer:

If the particles of the medium vibrate in a direction parallel to the direction of propagation of the wave, it is called a longitudinal wave. In longitudinal waves, the particle movement is parallel to the direction of wave propagation.

Explanation:

15-letter words that start with e

electromagnetic

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The answer is 3.53400621

Reduce the expression, if possible, by cancelling common factors.

Answer: 3.53400621

Explanation: Hope this helped! :)

Answer:

A change in size, shape, or matter.

Explanation:

A physical change does not produce new substances. A physical change may only change the physical properties of a substance. a change in size, shape, or phase of matter.

Answer: It does not change the identity of a substance

Explanation:

Considering the energy systems:

Energy is the ability to do work.

There are several forms of energy such as:

Generally, all matter possesses energy that can be used to do work.

The various forms of energy can be interconverted.

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From the question;

1) It takes 15.75 years to decrease to 1/8

2) It takes 8.36 years to decrease to 1/3

Half-life is the length of time it takes for a chemical to degrade or go through a particular process. It frequently refers to the length of time it takes for half of a radioactive substance to decay into a stable form in the context of radioactive decay.

We know that;

\(N/No = (1/2)^t/t1/2\)

No = initial amount

N = amount at time t

t = Time taken

t1/2 = half life

\(1/8 = (1/2)^t/5.252^-3 = 2^-t/5.25\)

t = 15.75 years

Again;

\(1/3 = (1/2)^t/5.25\)

ln0.33 = t/5.25ln0.5

t = ln0.33/ln0.5 * 5.25

t = 8.36 years

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