Answer:
true
Explanation:
I think true because I think
PLEASE HELP ME, ILL GIVE BRAINLIEST
Which image is a correctly labeled prokaryotic cell?
Answer:
I believe it's the bottom left :)
Explanation:
A negative charge of - 0.0005 C exerts an attractive force of 9.0 N on a second charge that is 10 m away. What is the magnitude of the second charge?
Answer:
q₂ = 0.0002 C
Explanation:
Given that,
Charge, q₁ = -0.0005 C
The force between two charges, F = 9 N
The distance between charges, d = 10 m
We need to find the magnitude of the second charge. The force acting between two charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}\\\\q_2=\dfrac{Fr^2}{kq_1}\\\\q_2=\dfrac{9\times (10)^2}{9\times 10^9\times 0.0005}\\\\q_2=0.0002\ C[/tex]
So, the magnitude of the second charge is 0.0002 C.
How much force is needed to accelerate a 1400-kg car 2 m/s?
Answer:
2800N
Explanation:
Given parameters:
Mass of car = 1400kg
Acceleration = 2m/s²
Unknown:
Force on the car = ?
Solution:
To solve this problem, we use Newton's second law of motion.
Force = mass x acceleration
So;
Force = 1400 x 2 = 2800N
Helpppp! This assignment is due in 15 minutes . Click the photo attached.
Answer:
1: 6.637e-13 N
2: 6.637e-09 N
3: 1.335e-08 N
4: 1.335e-08 N
5: 1.456e-06 N
6: 5.839e-07 N
7: 6.673e-11 N
I'd suggest double checking these if you can.
Explanation:
Each of these you can answer by plugging the numbers into the equation
[tex]F = G\frac{m_1 m_2}{r^2}[/tex]
G is the gravitational constant 6.673×10⁻¹¹ N m² / kg²
So the first one would be:
[tex]F = 6.673 \times 10^{-11} \frac{Nm^2}{kg^2} \times\frac{1kg\times 1kg}{(10m)^2}\\F = 6.673 \times 10^{-11} N \times\frac{1}{100}\\F = 6.673 \times 10^{-13}N[/tex]
I'm not going to run through showing all calculations for the rest, as you're in a rush, so to whip through them
2: 6.637e-09 N
3: 1.335e-08 N
4: 1.335e-08 N
5: 1.456e-06 N
6: 5.839e-07 N
7: 6.673e-11
Pardon the lack of superscript, I just punched these into a python console to calculate them.
A car is traveling east at a speed of 25 m/s. It then takes
5 seconds to a stop at a red light (final velocity=0 m/s).
What is the acceleration of the car?
Answer:
-5m/s²
Explanation:
Given parameters:
Initial velocity = 25m/s
Time = 5s
Final velocity = 0m/s
Unknown:
Acceleration of the car = ?
Solution
The acceleration of a body is the rate of change of the velocity of the body with time.
Acceleration = [tex]\frac{Final velocity - Initial velocity }{time}[/tex]
So;
Acceleration = [tex]\frac{0 - 25}{5}[/tex] = -5m/s²
The car is decelerating at a rate of 5m/s²
how much time would it take for the sound of thunder to travels at a speed of 330m/seconds
"Younger teens often brag about a lack of sleep, but that usually stops when they get older. Why do you think that is?"
as we grow up we kinda experience some age staging so a teen got a lotta stuff going on they wanna be social active they be working on their popularity. so i guess thats it
Calculate the exerted on the heel of a boy's foot if the boy weighs 320N and he lands on one heel which has an area of 0.15m squared
Mujhe nhi pata sorry. Lekin mai bhut logo ko jaanti hoon jo iss savaal ka jawaab de sakte hai.
Compared to yesterday, you did three times the work in one-third the time. To do so, your power output must have been
a. the same as yesterdays power output
b. one-third yesterdays power output
c. three times yesterdays power output
d. nine times yesterdays power output
Answer:
D. nine times yesterdays power output
Explanation:
We know that formula for power with work is;
Power = workdone/time taken
Now, you did three times the work in one-third the time yesterday.
This means that;
Work yesterday; W_yesterday = W
Work today; W_today = 3W
Time yesterday; T_yesterday = t
Time today; T_today = t/3
Thus,power today is;
P_today = 3W/(t/3)
P_today = 9(W/t)
Since power output yesterday is W/t, it means you did nine times yesterday's power output.
Answer:
D
Explanation:
Nine times yesterday's power output.
What is the name of the following atoms?
a) An atom with 3 protons and 4 neutrons:
b) An atom with 2 protons and 4 neutrons:
c) An atom with 4 protons and 4 neutrons:
Answer:
an atom with 3 protons and 4 neutrons
Explanation:
Which statement is true? A. Inertia causes bodies to slow in their motion, unless they’re pushed by a force. B. Inertia resists changes to the state of motion of a body. C. Inertia decelerates a body. D. Inertia is due to friction.
Answer:
B. Inertia resists changes to the state of motion of a body.
Explanation:
From the given choices, it is true that inertia resists changes to the state of motion of a body.
Inertia is a form of force solely dependent on the weight of a body. This quantity defines the native ability of a body to resist changes in motion.
According to Newton's first law, the concept of inertia is even more clearly defined.
The law states that "an object will remain in a state of rest or of uniform motion unless it is acted upon by an external force" .
Why is the terminal velocity of a 1 g lead pellet higher than that of a 1 g piece of paper?
Which object has the most thermal energy?
Answer:
B
Explanation:
The object with the most thermal energy is the choice B. This is because from the given choices, it has the most mass and highest temperature of all the bricks.
Thermal energy is the sum total of the average kinetic energy within the system.
It is mathematically expressed as:
Quantity of energy = mass x specific heat x change in temperature
We see that the quantity of the thermal energy is directly proportional to mass and temperature changes.
Answer:
B. a 4 kg brick at 25 degrees Celsius
Explanation:
did the quiz <3
Natural Resources Question 5
Which statement describes an advantage of using renewable
resources?
Select one
-They make energy more affordable
-They will increase the demand for electricity
-They will be available for many years.
-They make electricity less dangerous.
Answer:
-They will be available for many years.
Explanation:
The advantage of using renewable resources is that they will be available for many years.
Renewable resources have very fast turn over time for replenishing, therefore, they are available over an extended period time.
They are not used by consumption and so they will continually be available. This is different from the non-renewable resources which are depleted as they are being used up.
Examples of renewable resources are wind, water and air
Based on what you have just read, what are the advantages of storing music digitally compared to using an analog system?
Storing music digitally requires less storage room than analog records or tapes. Digital music is easier to copy and the copies are the same as the original. The quality of the signal does not degrade over long periods of time.
Sample Response: Storing music digitally requires less storage room than analog records or tapes. Digital music is easier to copy and the copies are the same as the original. The quality of the signal does not degrade over long periods of time.
A hurdler is 0.635 m from a hurdle when he jumps at 3.22 m/s at a 62.9 degrees angle. How many seconds later does he clear the hurdle? (Hint: it is not necessarily at the highest point in his motion.) (Unit = s) Watch sig figs.
Answer:
Explanation:
The horizontal distance of the hurdle = .635 m
This distance is covered by hurdler by horizontal component of his velocity
horizontal component of hurdler's initial velocity = 3.22 x cos 62.9
= 1.4668 m /s
displacement in horizontal direction = .635 m , acceleration = 0 as no force acts in horizontal direction .
So time taken to clear the hurdle
= .635 / 1.4668 s
= .433 s .
The model above shows sunlight that is directly hitting one side of the earth during its winter season. Which sentence explains why this area is experiencing shorter hours of daylight
Answer:
During winter time the northern hemisphere leans away from the sun due to the rotation of earth and due to this change the sunlight is not direct on these areas instead it is spread and due to this the shadows are longer and the sunlight is not intense. The earths rotation around the sun causes the seasons to change and that is why we experience shorter hours of daytime.
Explanation:
During winter time the northern hemisphere leans away from the sun due to the rotation of earth and due to this change the sunlight is not direct on these areas instead it is spread and due to this the shadows are longer and the sunlight is not intense. The earths rotation around the sun causes the seasons to change and that is why we experience shorter hours of daytime.
The term for Italian Opera
Answer:
Opera seria,
Explanation:
Which kind of cycle is the rock cycle-one with a set path or one with many possible paths? Construct an explanation that describes at least two possible changes to a rock.
Please? thank you
Answer:
Every rock is somewhere in the rock cycle. The story of the rock is the story of rock cycle: where the rock is now on the rock cycle, the path it took on the rock cycle to get to where it is now, and the path on the rock
Explanation:
This is the answer i put it and it worked if it didn't work for you that's because you lesson or teacher was doing it in a different way.
Answer:
The rock cycle, illustrated in Figure below, depicts how the three major rock types – igneous, sedimentary, and metamorphic - convert from one to another. Arrows connecting the rock types represent the processes that accomplish these changes.
Explanation:
A gardener uses 1600 J of work to push a wheelbarrow for 45 seconds. How
much power does she use?
O A. 35.6 W
O B. 69.7 W
O C. 29.2 W
O D. 43.8 W
Help please!!!!
Answer:
35.6
Explanation:
given
workdone=1600J
time taken(t)=45 sec
power=w/t
=1600/45
=35.6 watt
Please Help Me!!!...........
Question 3
A mover pushes a box with 400N a distance of 3m in 55s.
a -Calculate the work:
b- Calculate the Power
Answer:
1200J
21.8Watts
Explanation:
Given parameters:
Force = 400N
Distance = 3m
Time = 55s
Unknown:
Work done = ?
Power = ?
Solution:
Work done is the force applied to move a body through a certain distance.
Power is the rate at which work is done
Work done = Force x distance = 400 x 3 = 1200J
Power = [tex]\frac{work done }{time}[/tex] = [tex]\frac{1200}{55}[/tex] = 21.8Watts
Question 10 of 10 When light passes through a small opening in a barrier, it bends to spread out on the other side of the opening. How does this phenomenon support the wave model of light? O A. It is the result of destructive interference. B. It is the result of the barrier acting as a blackbody radiator. O c. It is the result of diffraction. O D. It is the result of constructive interference. SUBMIT
Answer:
C. It is the result of diffraction
Explanation:
I just took the test
Answer:
C
1.2.5
trust me i just did it
Explanation:
A rocket sled accelerates from 10 m/s to 40 m/s in 2 seconds. What is the average acceleration of the sled?
Answer:
15m/s²
Explanation:
Given parameters:
Initial velocity = 10m/s
Final velocity = 40m/s
Time taken = 2s
Unknown:
Average acceleration = ?
Solution:
Acceleration is the rate of change of velocity with time;
Acceleration = [tex]\frac{Final velocity - Initial velocity }{time}[/tex]
Acceleration = [tex]\frac{40 - 10}{2}[/tex] = 15m/s²
What type of energy is due to motion potential energy or kinetic energy
Answer:
Kinetic Energy
Explanation:
Potential Energy is where something is building up energy to move.
Answer:
Kinetic Energy
Explanation:
A spring has a spring constant of 800 N/m. How much work must be done to stretch the spring 0.4 m from its unstretched position?
A. 64.0 J
B. 160.0 J
C. 320.0 J
D. 640.0 J
Answer:
A. 64.0 J
Explanation:
Given parameters:
Spring constant = 800N/m
Extension = 0.4m
Unknown:
Work done = ?
Solution:
The work done in a string is given as:
Work done = [tex]\frac{1}{2}[/tex] x 800 x 0.4² = 64J
A car has a mass of 1000 kg and a momentum of 12 000 kg m / s.
What is its kinetic energy?
Answer:
It's 7.2 x 10^10
I got that because I've put that into the calculator
but just transform it into a standard form = 72000000000
Calculate the gravitational potential energy of 3kg book sitting on shelf 4m high
Answer:
i know it i know it pick me
Explanation:
Answer:
nope loser
Explanation:
Select all that apply.
Check all that characteristics of zebra mussels.
Question 2 options:
the size of a hand
lives in cool water
can attach to any surface
filter feeders
Answer: 1 and 3
Explanation:
Help!!! i'll mark brainliest
If I stretch a standard rubber band (mass of 0.01 kg, spring constant of 40 N/m) 0.25 meters, how high would it launch into the air?
Answer:
You have a hooks law problem F=kx Where F= (40 N/m)× (0.25 meters) F= 10 N Hence the force is 10 NAnswer: The answer would be 12.5 m