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3 years ago

Drag each tool to the correct category. Identify the common use of each tool used by space scientists and earth scientists

Physics

2 answers:

inysia [295]3 years ago

8 0

<h3>Answer</h3>

Tools that magnify objects Tools that don't magnify objects

magnifying glass rule

telescope binoculars

microscope

<h3>Explanation</h3>

radio dish: is use to receive radio waves from the air.

binoculars: provide a magnified stereoscopic view of distant objects.

streak plate: is a technique which is used to grow bacteria on a growth media surface so that individual bacterial colonies are isolated and sampled.

wind vane: is used to determine wind direction.

ruler: is used for measuring a line.

microscope: is used to magnify the objects which are not visible by naked eyes.

magnifying glass: is used to magnifying tiny objects which are difficult to see yet they are visible.

telescope: use by space scientist to examine astronomical event that may take place in the sky which is too far.

navik [9.2K]3 years ago

4 0

Answer:

Tools that magnify objects:

1. Magnifying Glass

2. Binocular

3. Telescope

4. Microscope

5. Radio Dish

Tools that do not magnify objects:

1. Wind vane

2. Streak Plate

3. Ruler

Explanation:

The tools or devices that can show an object closer and bigger are called magnifying instruments. These tools have lens/mirrors or some other mechanism to make the incident light beams converge at one point and focus. If you notice, Magnifying glass, Binoculars, Telescope, and microscope use convex lens/concave mirrors which converge the light beams at one point. Thus they will magnify. Radio dish also converges the incident radio waves on the receiver. These might not visible to naked eye but magnification do occur in them as well with the help of a concave dish structure.

Rest other tools do not magnify any object as they don't have any such parts in them which can make the light beams converge at one point.

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A single conservative force F = (7.0x - 11) N, where x is in meters, acts on a particle moving along an x axis. The potential en

Umnica [9.8K]

Answer:

(a) 34.6429J

(b) -1.57 m

Explanation:

The derivative of the potential energy with respect to the position is equal to the negative of the force, so:

$-\frac{dU}{dx}=F\\ dU=-Fdx$

Then, if we integer both sides, we get:

∫dU = -∫(7x - 11)dx

$U=\frac{-7}{2}x^{2} + 11x + c$

we know that U is equal to 26 J when x is zero, so:

$U=\frac{-7}{2}x^{2} + 11x + c$

$26=\frac{-7}{2}(0)^{2} + 11(0) + c$

$26=c$

Finally, the equation for the potential energy is:

$U(x)=\frac{-7}{2}x^{2} + 11x + 26$

Therefore, the maximum positive potential energy is the energy when x is equal to 11/7. That is because the equation of U is the equation of a parable, and the vertex in a parable is given by:

$x=\frac{-b}{2a} = \frac{-11}{2(-7/2)} =\frac{11}{7}$

Where b is the number beside x and a is the number beside $x^{2}$ , Then, the value of maximum U is:

$U(11/7)=\frac{-7}{2}(11/7)^{2} + 11(11/7) + 26$

$U(11/7)=34.6429J$

On the other hand, the negative and positive values of x where the potential energy is equal to zero is calculated as:

$U(x)=\frac{-7}{2}x^{2} + 11x + 26$

$0=\frac{-7}{2}x^{2} + 11x + 26$

if we solve this using the quadratic equation, we get:

$x =\frac{-11+\sqrt{11^{2}-4(-7/2)(26)} }{2(-7/2)}=-1.5747$

$x =\frac{-11-\sqrt{11^{2}-4(-7/2)(26)} }{2(-7/2)}=4.7175$

Finally, the negative and positive values of x where the potential energy is equal to zero are -1.5747 and 4.7175 respectively.

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3 years ago

3. How does the centripetal force change when

OLga [1]

Answer:

The centripetal force increases.

Explanation:

Centripetal force is given by $F_c=ma_c$ ; where $a_c=\frac{v^2}{r}$ .

Given these two equations, we can rewrite the formula for centripetal force as:

$F_c=m\frac{v^2}{r}$

As shown, radius is in the denominator, thus, a smaller radius would lead to a larger centripetal force.

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3 years ago

An object has a mass of 12 kg. on planet a, the object weighs 69 n. the force of gravity on planet a is:_____.

balandron [24]

the force of gravity on planet a is g = 5.72 m/s2

There is an object that weighs 12 kg. The object's weight on Planet A is 69 N. The equation F=mg, where F is the weight, m is the mass, and g is the force of gravity, can be used to calculate the force of gravity on Planet A:

g = F/m

g = 69 N/ 12 kg

g = 5.72 m/s2

<h3>What is the gravity force?</h3>

The force of attraction between any two objects in the universe is known as gravity or gravitational force. The mass of the object and the square of the distance between them determine the force of attraction. The weakest known force in nature, it is by far.

learn more about object has a mass here

brainly.com/question/25959744

#SPJ4

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2 years ago

ozone, O3 methane, CH4 oxygen gas, O2 All of these may be classified as A) ionic compounds B) covalent compounds C) inorganic co

GrogVix [38]

They are all covalent compounds as they are made up of nonmetals. Ionic compounds are made up of a nonmetal and a metal. Some of the compounds are organic because they contain carbon so they cannot all be classified as inorganic. CH4, which is methane is reactive so this makes D false.

The correct answer is B) covalent bonds.

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3 years ago

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A monochromatic beam of light has a frequency

tatiyna

Answer:

$5.24*10^{-19}J$