All categories

3 years ago

Reflecting telescopes are popular because they're

2 answers:

Crank3 years ago

6 0

C. easier to build than a refracting telescope

Big mirrors used in reflecting telescopes are easier and cheaper to make than big lenses which would cost more because of the quality of glass required to make refracting telescopes

nasty-shy [4]3 years ago

6 0

C. easier to build than a refracting telescope.

You might be interested in

The box plots show the summer temperatures, in degrees Fahrenheit, in two cities. Summer Temperatures in City A Summer Temperatu

Inga [223]

Answer:b

Explanation:

7 0

4 years ago

Read 2 more answers

If the Sun were scaled down to the size of a grapefruit, about how far would you have to walk from our classroom to reach Alpha

Burka [1]

Answer:

2000 miles.

Explanation:

It's the Colorado scale model, in which sun is taken as the grapefruit and the distances are measured for different planets with respect to sun just for understanding.

6 0

3 years ago

HELP ASAP PLS ILL GIVE YOU BRAINLIEST

lys-0071 [83]

Answer:

chinese

Explanation:

8 0

3 years ago

Read 2 more answers

Help me find the acceleration

ANEK [815]

a = 3.09 m/s²

<h3>Explanation</h3>

This question doesn't tell anything about how long it took for the car to go through 105 meters. As a result, the timeless suvat equation is likely what you need for this question.

In the timeless suvat equation,

$a = \dfrac{v^2 - u^2}{2\; x}$

where

$a$ is the acceleration of the car;
$v$ is the final velocity of the car;
$u$ is the initial velocity of the car; and
$x$ is the displacement of the car.

Note that v and u are velocities. Make sure that you include their signs in the calculation.

In this question,

$a$ is the unknown;
$v = -10.9 \; \text{m} \cdot \text{s}^{-2}$ ;
$u = -27.7 \; \text{m} \cdot \text{s}^{-2}$ ; and
$x = - 105 \; \text{m}$ .

Apply the timeless suvat equation:

$a = \dfrac{v^{2} - u^{2}}{2\; x}\\\phantom{a} = \dfrac{(-10.9)^{2} - (-27.7)^{2}}{2 \times (-105)}\\\phantom{a} = 3.09 \; \text{m} \cdot \text{s}^{-2}$ .

The value of $a$ is greater than zero, which is reasonable. Velocity of the car is negative, meaning that the car is moving backward. The car now moves to the back at a slower speed. Effectively it accelerates to the front. Its acceleration shall thus be positive.

7 0

3 years ago

While frying French fries, Wanda burned her hand. Burns are examples of a:

Alja [10]

Answer:

d. homeostatic imbalance

Explanation:

8 0

3 years ago

Read 2 more answers