Answer:
The depth of focus achievable with those lenses is small.
Explanation:
A larger aperture makes it much harder to focus on more than one object. When using a telephoto lens (the ones the question is referring to), the depth of focus is very small. For example, using a telephoto lens to take a photo of a runner might get the runner in focus, but certainly not the track, or the audience behind them. If you look at photos, especially older photos, of Olympians in almost any sport you can see this.
Hope this helps!
I will give a 5-star answer and Brainlest
Direct contact is necessary for which type of energy transfer?
A. Conduction
B. Sound Waves
C. Convection
D. Radiation
Answer:
D
Explanation:
As an aeroplane decelerates, its kinetic energy decreases. Suggest what happens to this energy
they are converted into thermal and sound energy as well as the kinetic energy in the air
I'll give brainliest
Answer: figuratively speaking both the lines for the force Q and force P is equal.
given a force of 88N and an acceleration of 4 m/s 2, what is the mass?
Answer:22kg
Explanation:
from F=ma, 88=4m, m=22kg
an acorn falls from a tree. ignoring air resistance, what forces are on the acorn while it’s falling?
Answer: gravity
Explanation:
3. A mouse crawls 9 meters left in a tube, pauses and then crawls back 5 meters before
stopping. The entire trip took a total of 7 seconds.
a. What is the average speed of the mouse over these 7 seconds?
b. What is the average velocity of the mouse over these 7 seconds?
c. What was the instantaneous velocity of the mouse when it turned around?
Answer:
A
Explanation:
If it is loooking for a proper question, it wants to know how fast the mouse was going
Answer: The answer for this is A.
Explanation: I know this cause i'm smart and totally didn't copy the other guy just to get points
i swimmers swims 180m in 20 seconds how much meters does she swim in a second
Answer:
20
Explanation:
20m= 1 seconds
40m= 2 seconds
180÷9=20
explain properties and importance of light and how it separates into colours
Answer:
White light can be separated into different colors using a special lens called a prism. As visible light passes from air into the glass, the change in medium causes a change in direction and speed. Refraction causing the separation of white light into its various color wavelengths is called dispersion.
hope this helps
2. All objects contain both what and what charges.
Answer:
All objects are composed of these atoms. ... Charged objects have an imbalance of charge - either more negative electrons than positive protons or vice versa. And neutral objects have a balance of charge - equal numbers of protons and electrons.
Explanation:
A group of waves is propagated at a speed that is ________ the speed of the individual waves in deep water.
which wave has a higher frequency and why?
Explanation:
the figure in the left side has higher frequency.
because it has more nos. of wave in 1sec.
two objects are sitting 6m apart, one object has a mass of 100kg and the other has a mass of 200kg. what is the gravitational attraction between them
What unit of pressure in ideal gas law.
plss helpp:((
(i'll mark as brainliest if u answer)
Answer:
Seriously Your Question Is Kinda Tremendous
Explanation:
I'll Head Is Boiling From Question That Keeps Popping Up My Head, Someone Might Give You A Positive Hand
The magnitude of vector A is 2.5 m and is directed towards east. The magnitude and direction of A /2 will be
The magnitude and direction of half of the given vector A is 1.25 m east.
The given parameters;
magnitude of vector A = 2.5 m eastA vector can be described with both magnitude and direction. The magnitude of the vector is the scalar or numeric representation of the vector.
When the scalar representation has direction, we term the quantity a vector quantity.
The magnitude of half of the given vector is calculated as follows;
[tex]\frac{A}{2} = \frac{2.5 \ m}{2} = 1.25 \ m\ east[/tex]
Thus, the magnitude and direction of half of the given vector A is 1.25 m east.
Learn more here:https://brainly.com/question/14586816
What is the difference between a low tide and a high tide
Answer:
High water level during a tide is called High tide.
Low water level during a tide is called Low tide.
What is a thought experiment?
Answer:
A thought experiment is an experiment carried out only in the imagination
Explanation:
What is the force that makes planets ring around it? ANSWER IT IF YOU ARE SMART
Answer:
gravitational force make the planet move around the sun on its orbit
Answer:
gravitational force makes planets orbit the sun
A falling object with a weight of 15N is moving downwards towards earth at a steady speed. What is the size of the drag force on this object?
Answer:
15 N :D
Explanation:
The size of the drag force on this object falling at a constant speed is determined as 15 N.
Drag force on the objectThe drag force on the object is determined by calculating the net force on the object;
F(net) = W - D
where;
W is weight of the objectD is the drag force of airma = W - D
at constant speed, acceleration, a = 0
0 = W - D
W = D
15 N = D
Thus, the size of the drag force on this object falling at a constant speed is determined as 15 N.
Learn more about drag force here: https://brainly.com/question/15237524
#SPJ2
State a hypothesis about your estimated daily water use.
Answer
Estimates vary, but, on average, each person uses about 80-100 gallons of water per day, for indoor home uses.
Explanation:
PLEASE ANSWER THIS RIGHT ASAP
What is the correct definition of energy?
A: chemical changes
B: force × distance
C: both kinetic and potential energy
D: the ability to do work or cause change
Answer:
D: The ability to do work or cause change.
Explanation:
Energy can be defined as the ability to do work. We apply energy in basically everything we do in life, energy is needed to walk or move from one position to another, it is required to eat and do other basic things of life. The body system converts the food that is being consumed into energy, this energy can be switched from one form to another.
There are various forms of energy which include solar energy, wind energy, electrical energy, mechanical energy, kinetic energy, potential energy, etc. This form of energy can be converted from one form to another but cannot be destroyed.
Hope this helps :)
Omar rubs a balloon with wool, giving the balloon a
charge of -8.9x10-14 C. What is the force between
the balloon and a metal sphere that is charged to
25 C and is 2 km away?
Answer:
-8.9×10-14=-89-14=-103°C
25°C=2km
-103°C=? Less
=-103/25×2km
=-8.24km
Compare the amplitude of these waves.
help?
Answer:
The greater the amplitude of a wave then the more energy it is carrying.
Explanation:
E is carrying the most energy which means that it has the highest amplitude
A has the least energy because it has the lowest amplitude
What water pressure must a pump that is located on the first floor supply to have water on the thirteenth of a building with a pressure of 35 lb/in2 Assume that the distance between each floors is 10ft.
The water pressure on the first floor must be 455 PSI in order to push the water to the 13th floor at the given pressure.
The given parameters;
Pressure on the 13 th floor, P₁ = 35 PSIDistance between each floor, d = 10 ftThe vertical pressure of the water is calculated as follows;
[tex]P = \rho gh\\\\\frac{P}{h} = \rho g\\\\\frac{P}{h} = k\\\\\frac{P_1}{h_1} = \frac{P_2}{h_2} \\\\[/tex]
The vertical height of the first floor from the 13th floor = 130 ft
The vertical height of the 13 ft floor = 10 ft
[tex]P_1 = \frac{P_2 h_1}{h_2} \\\\P_1 = \frac{35 \times 130}{10} \\\\P_1 = 455 \ PSI[/tex]
Thus, the water pressure on the first floor must be 455 PSI in order to push the water to the 13th floor at the given pressure.
Learn more about vertical height and pressure here: https://brainly.com/question/15691554
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Lamar has been feeling a little sluggish. He is not sick, but he has been working a lot, and even though he goes for a run every morning, he is not getting the same benefits out of it that he used to. His friend suggests that he try acupuncture, but Lamar does not know much about it or why it would be helpful. What is the BEST explanation that you could give Lamar?
A.
Acupuncture is designed to make everyone feel energized and alert.
B.
Acupuncture focuses on rewiring the nervous system more effectively.
C.
Acupuncture is designed to help the energy in the body flow more efficiently.
D.
Acupuncture is very unscientific and completely rejected by Western medicine.
PLEASE NO LINKS OR I WILL REPORT YOU
Answer:
The correct answer is a.
Describe at least two similarities between untraviolet rays and microwaves
Help me quick!!! please!!
Calculate the power of an engine which raises a mass of 1000 kg to a height of 40 m in 10 s.
Answer:
39.240 W
Explanation:
Let's start by calculating the work done by the engine. We can assume that it is the same work done by the weight of the object to bring it from 40m to the surface: as much energy it takes to bring it up, the same ammount it takes to bring it down. Said work is [tex]w= \vec F\cdot \vec{h} = mg h = 1000 \times 9.81\times 40 = 392.400 J[/tex]
At this point we can simply apply the definition of power, that is [tex]P = \frac wt[/tex], to get the power of the engine is [tex]39.240 W[/tex]
Answer:
P=39200W
Explanation:
P=(mgh)/t
P=(40×9.8×1000)/10
P=39200W
What is benford's law.
Answer:
Known variously as the Newcomb–Benford law, the law of anomalous numbers, or the first-digit law, Benford's Law is the observation that the first digit in many real-world collections of numerical data will be tiny, as shown by the example of the first-digit law.
Explanation:
Hope it helps:)
Please help! Question is attached.
Answer:
a. 6
b. 6 m/s²
c. 300 m to the right
d. 30 secs
Explanation:
slope = rise /run
60-0/10-0
= 6
b. slope = acceleration = 6 m/s²
c. d=ut+1/2at²
t=10 (segment A last for 10 secs)
u - initial velocity = 0
so d = 0(10)+1/2*6*10²
=300 m
answer question 7 please
