Answer:
1.36 x [tex]10^{-15}[/tex][tex]ms^{-2}[/tex]
Explanation:
The equation [tex]g = \frac{G*M}{R^2}[/tex] would be used where:
g = acceleration due to gravity
G = universal gravitational constant (6.67408 × [tex]10^{-11}[/tex] [tex]m^{3} kg^{-1} s^{-2}[/tex])
M = mass
R = radius.
assuming the value following 10 is its exponent, which is a little confusing, the values given would simply be substituted.
Anyone can correct me if I'm wrong.
30 PTS NEED THIS FAST
Answer:
the one made from aluminum
Explanation:
Explain how a current is induced in the wire?
Answer:
If a coil of wire is placed in a changing magnetic field, a current will be induced in the wire. This current flows because something is producing an electric field that forces the charges around the wire. (It cannot be the magnetic force since the charges are not initially moving). ... that determines the induced current.
A student wants to design an investigation to determine if an object contains potential energy. What are some questions the student could ask to determine if the object contains potential energy?
Does the object have kinetic energy?
Does the object move when it is released from a rest position?
Does work have to be done to hold the object in place?
Does a force act on the object?
Answer:
does work have to be done to hold the object in place
Answer:
Does the object move when it is released from a rest position? and Does a force act on the object?
Explanation:
i had the same quiz today and the other 2 are wrong
What would happen if you didn't have chemical energy in your body? Choose the best answer.
A You wouldn't be able to think.
B You wouldn't be able to move.
C You wouldn't be able to sleep.
D You wouldn't be able to sit.
ill give a thanks
Answer:B
Explanation:
Because chemical energy fuels your body with energy so without it u wont have enough energy to move.
To increase an impulse:
A. increase the change in momentum.
B. decrease the change in velocity.
C. increase the distance.
D. decrease the mass.
what are three assumptions of the kinetic molecular theory
Why does eating less meat conserve more water than just eating plants?
Answer:
Studies show that eating fewer animal-based products could reduce water use since animal production uses more water than crops do. In addition, reducing the amount of food that's lost or wasted at various points in the food supply chain could feed about 1 billion extra people while simultaneously reducing water use.
How would we find bond length?
1) A plane whose airspeed is 220 km/h heads due
north. It suddenly encounters a 150 km/h cross wind
blowing due east. What is the resulting velocity of
the plane with respect to the ground?
Answer:
=(220^2 +150^2)
/
put this on a square root
for you to get 266.2705391
round it to a whole number =266km/h
Explanation:
p
A
is done by lifting the ball without prior swing of the leg.
A. Dodge
B. Kick
C. Scoop
D. Remove up
I’ll give brainless
you can swing your leg so it can't be kick, and remove up doesn't make sense and dodging it won't get you anywhere, so scooping it
What exactly occurs at the alveoli? Explain using blood vessels, diffusion, oxygen, and carbon dioxide in your answer (2-3 sentences)
Answer:
Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. Inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.
Explanation:
Hope this helps :)
Please Help ASAP!!!
What/Where is the direction of wind during launch of a paper aeroplane? (Bernoulli's Principle)
Answer:
The Forces of Flight
At any given time, there are four forces acting upon an aircraft.
These forces are lift, weight (or gravity), drag and thrust. Lift is
the key aerodynamic force that keeps objects in the air. It is the
force that opposes weight; thus, lift helps to keep an aircraft in
the air. Weight is the force that works vertically by pulling all
objects, including aircraft, toward the center of the Earth. In order
to fly an aircraft, something (lift) needs to press it in the opposite
direction of gravity. The weight of an object controls how strong
the pressure (lift) will need to be. Lift is that pressure. Drag is a
mechanical force generated by the interaction and contract of a
solid body, such as an airplane, with a fluid (liquid or gas). Finally,
the thrust is the force that is generated by the engines of an
aircraft in order for the aircraft to move forward.
Explanation:
A long board is free to slide on a sheet of frictionless ice. As shown in the top view in the diagram, a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation, which of the following occurs? Select two answers.
Answer:
A) rational kinetic energy is conserved
For the scenario painted below Rational kinetic energy is conserved
Option A is correct
What is Rational kinetic energy?Kinetic energy is simply defined as the energy that an item or particle has as a result of its movement.
In conclusion, For A longboard is free to slide on a sheet of frictionless ice. and a skater skates to the board and hops onto one end, causing the board to slide and rotate. In this situation Rational kinetic energy is conserved
Read more about Kinetic energy
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Which image shows an example of the strong nuclear force in action?
i think this is the incomplete page that you are showing but the answer is
:-
BA thin beam of light of wavelength 625 nm goes through a thin slit and falls on a screen 3.00 m past the slit. You observe that the first completely dark fringes occur on the screen at distances of ±8.24 mm from the central bright fringe, and that the central bright fringe has an intensity of 2.00 W/m² at its center. What is the intensity of the light at a point on the screen that is one-quarter of the away from the central bright fringe to the first dark fringe?
Answer:
I = 1.62 w/m^2
Explanation:
wavelength = 625 nm
position of screen = 3.00 m past the slit
Determine the intensity of the light
I = [tex]I_{0} ( sin\frac{\beta }{2 } /\frac{\beta }{2} )^2[/tex]
β = 2π*Dsin∅ / л
[tex]I_{0}[/tex] = 2
Attached below is the remaining part of the solution
HELP DUE IN 3 MINUTESSSSS
Answer:
roots
Explanation:
In the following graph, what is the slope?
Answer:
to find the slope you need to find the change in distance then you divide by the corresponding change in time
eg
( 4-2) ÷ (2-1)
= 2m/s
what is the speed of the pulley A if pully D is moving at a speed of 8 km/h
Answer:
hey I know the answer for this
Explanation:
it will be reduce the speed of A
the answer is 7.
this is the exact answer.
if you don't like this answer means pls comment me
The speed of the 2 kg cart after 5 seconds is ? cm/s.
Why concave lens is called diverging lens
When a parallel beam of light passes through a convex lens, the rays become farther from one another when the come out. This process of rays is called ''to diverge''. The concave lens makes rays of light diverge, so it is called diverging lens.
Radio waves travel at the speed of light. Marsha listen to radio station at 91.3 mHz, which is a frequency of 9.13*10^ 7 H2 What is the wavelength of this radio signal in a vacuum?
Answer:
3.29 meters
Explanation:
c = λ f
c = speed of light = 3 * 10^8 m/s
λ = wavelength
f = frequency
3 * 10^8 m/s = λ * (9.13 * 10^7 1/s)
λ = (3 * 10^8 m/s) / (9.13 * 10^7 1/s)
λ = 3.29 m
Two speakers that are 15.0 mproduce in-phase sound waves of frequency 250.Hz in a roomwhere the speed of sound is 340. m/s. A woman starts out at the midpoint between the two speakers.a.What does she hear at the midpoint, constructive or destructive interference?b.She now walks slowly towards one of the speakers. How far from the center must she walk before she first hears the sound reach a minimum intensity?c.How far from the center must she walk before she first hears the sound at a maximum intensity?d.How far from the center must she walk before the second time she hears the sound at the minimum intensity?
Answer:
a. Constructive interference.
b. [tex]0.34\; \rm m[/tex].
c. [tex]0.68\; \rm m[/tex].
d. [tex]1.02\; \rm m[/tex].
Explanation:
Frequency of this sound wave: [tex]f = 250\; \rm Hz = 250\; \rm s^{-1}[/tex].
Speed of this sound wave: [tex]v = 340\; \rm m \cdot s^{-1}[/tex].
Calculate the wavelength of this sound wave:
[tex]\begin{aligned} \lambda &= \frac{v}{f} \\ &= \fraac{340\; \rm m \cdot s^{-1}}{250\; \rms^{-1}} \approx 1.36\; \rm m\end{aligned}[/tex].
Path difference refers to the absolute value of the difference between:
the distance between the first source (the first speaker) and the observer, andthe distance between the second source (the second speaker) and the observer.When the observer in this question is on the line between the two speakers at [tex]d[/tex] meters from the midpoint, the corresponding path difference would be [tex]2\; d[/tex] meters. (Add [tex]d\![/tex] to the distance from the closer source, and subtract [tex]d\!\![/tex] from the distance from the other source.)
The question states that sound from the two speakers are in-phase. In other words, at every instant, the sound wave from the two speakers are at the same phase at the position of each speaker.
Because wave from the two sources are in-phase at the source:
Constructive interference happens when the path difference is an integer multiple of wavelength ([tex]k\, \lambda[/tex], where [tex]k[/tex] is an integer.) That includes: [tex]0[/tex], [tex]\lambda[/tex], [tex]2\, \lambda[/tex], etc.Destructive interference happens when the path difference is an one-half plus some integer multiple of wavelength ([tex](k + 1/2) \, \lambda[/tex], where [tex]k[/tex] is an integer.) That includes: [tex]\lambda / 2[/tex], [tex]3\, \lambda / 2[/tex], [tex]5\, \lambda / 2[/tex], etc.Path difference is [tex]0[/tex] when the observer is at the midpoint. That would correspond to constructive interference.
The first destructive interference (minimum intensity) corresponds to a path difference of [tex]\lambda / 2[/tex]. Along the line, that would be observed at [tex](1/2) \cdot (\lambda / 2) = 0.34\; \rm m[/tex] from the midpoint.
The next constructive interference (maximum intensity) would be observed when path difference is [tex]\lambda[/tex]. Along the line, that would be observed at [tex](1/2)\cdot \lambda = 0.68\; \rm m[/tex] from the midpoint.
The second destructive interference (minimum intensity) would be observed when path difference is [tex](1 + (1/2))\, \lambda[/tex]. Along the line, that would be observed at [tex](1/2) \cdot ((3/2)\cdot \lambda) = 1.02\; \rm m[/tex] from the midpoint.
A car of mass 800 kg goes round a corner of radius 65 m at a
speed of 10 m/s
b) Suggest how this force is likely to be obtained.
Answer:
Centrifugal force = 1230.77 Newton.
Explanation:
The force associated with the car is generally referred to as centrifugal force and it can be calculated using the formula;
Centrifugal force = mv²/r
Given the following data;
Mass = 800kg
Radius = 65m
Velocity = 10m/s
To find the force;
Centrifugal force = (800*10²)/65
Centrifugal force = (800*100)/65
Centrifugal force = 80000/65
Centrifugal force = 1230.77 Newton.
Someone please help I’m so confused
Explanation:
the switch and the battery
When a wool cloth is rubbed on the surface of a balloon, it tends to give away electrons causing the surface of the balloon to become :
positively charged
negativity charged
neutrally charged
Answer:
It is negativity charged
Answer:
positively charged
Explanation:
a wool has neutral charges hence when rubbed against a balloon it will generate positive charges
Acceleration due to gravity is stated as a constant which is given 9.8 m/s2. Many scientists have planned and design experiments to investigate if this value is true or false, and most of the results have concluded that the values of acceleration due to gravity ranges from 9.8 m/s2 to 10 m/s2.
A hanging 7.5 kg object stretches a spring 1.1 m. What is the spring constant?
A hanging 7.5 kg object stretches a spring 1.1 m, the spring constant of the spring is approximately 66.82 N/m.
Hooke's Law, which states that the force exerted by a spring is directly proportional to the displacement of the spring from its equilibrium position, can be used to compute the spring constant.
F = -k * x
Here, we have:
mass (m) = 7.5 kg,
displacement (x) = 1.1 m,
acceleration due to gravity (g) = 9.8 m/[tex]s^2[/tex].
We know that:
weight (W) = mass * acceleration due to gravity
So,
W = m * g
W = 7.5 kg * 9.8 m/[tex]s^2[/tex]
W = 73.5 N
F = W = 73.5 N
F = -k * x
73.5 N = -k * 1.1 m
Solving for k:
k = -73.5 N / 1.1 m
k ≈ 66.82 N/m
Thus, the spring constant of the spring is approximately 66.82 N/m.
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16. Carol views a specimen under the microscope and notices that it has no nucleus. What
must she be looking at?
A. Animal cell
B. Plant cell
C. Bacteria
D. Protist
Answer:
C. Bacteria
Explanation:
Bacteria and archaea are the two domains which consist of organisms with prokaryotic cells. Prokaryotic cells are cells without nuclei or membrane-bound organelles.
Carlos uses a rope to pull his car 30 m to a parking lot because it ran out of gas. If Carlos exerts 2,000 N of force to pull the rope, and the rope is at an angle of 15° to the road, how much work did he do? Round your answer to two significant figures.
1.6 × 104 J
3.5 × 104 J
5.8 × 104 J
9.0 × 104 J
Answer:
Explanation:
Remark
The only thing that might trip you up is what to do with the angle. The vertical component of the 15 degrees does no work against anything. So the 15 degrees limits the horizontal force.
The formula is
Work = F * d * cos(15)
The givens are
F = 2000 N
d = 30 m
Cos(15) = 0.9659
Solution
Work = 2000 * 30 * cos(15)
Work = 57,955
Rounded to two places would be 5.8 * 10^4
C
What process is used to make food safer for consumption by killing bacteria within the food ? A. freezing B. fermentation C.antibiotic treatment D. pasteurization