Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.
(hope this helps) :)
If you apply a force of 10 N to a table and push it 5 m in 10 s, how much power did you deliver? Multiple choice question. A) 50 W B) 25 W C) 500 W D) 5 W
Answer:
D) 5 W
Explanation:
Force=10N
Distance =5m
Time=10s
Power =?
But Power= Work done/Time taken
P= W/s
W= Fxd=10x5=50
P=50/10
P=5W
A train travels 120 miles in 2.5 hours. What is its average speed?
Answer: 48 mph
Explanation: 48*2.5=120
ILL GIVE U BRAINLIEST!! help me
one or two sentences state whether you would expect the conditions to be a greater hazard for diversity dive down where is the return to the surface and explain your production in terms of gases define prescient
Answer:
Solubility in gasses and liquids increase as pressure increases. This is due to colligative properties. The nitrogen gas levels would increase the farther the diver dives due to the increase of pressure causing the solubility of the nitrogen to increase, thus increasing the amount of it as you go deeper in the ocean.
Explanation:
As they plummet down, the driver would be in more risk. The solubility of gases and liquids increases as pressure increases. This is due to the existence of colligative properties. The nitrogen gas levels grow when the diver descends further into the water due to increased pressure, which causes the nitrogen's solubility to rise, increasing the amount of nitrogen present.
A vector starts at the point (0, 0) and ends at (3, 1). What is the magnitude and direction of the displacement?
Answer:
tbh vector does not have any direction at all the answer is 0
which type of forces would be experienced by a sled that is being pulled by a rope (choose 4)
Use the velocity vs time graph to analyze the motion of the object.
Explanation:
the object has constant velocity for 2 seconds and it get a constant accelration (2ms-2)
Zeb was lifting a box onto a moving truck. He lifted with a net force of 2000N and the box had a mass of 100 kg. What was the resulting acceleration?
Answer:
20 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{2000}{100} = 20 \\ [/tex]
We have the final answer as
20 m/s²Hope this helps you
Ce unitate de masura are indicele de REFRACTIE?
Answer:se obesrva ca indicele de refractie NU are unitate de masura, este adimensional. Se exprima print-un raport, de exemplu 4/3, 1,5 etc.
Explanation:
What is the relationship between the temperature of a star and its luminosity?
Mass can be expressed in
Answer:
mass can be expressed in newtons
45 KG object has a momentum of 225 KG•m/s northward what is the objects velocity
Answer:
The answer is 5.0 m/s
Explanation:
(Hope this helps can I pls have brainlist (crown)☺️)
22. Calculate the displacement in meters a cyclist would travel in 5.00 h at an average
of 12.0 km/h to the south west
How does the spring constant influence the displacement? Do they increase or decrease together?
Trial No. Applied Force (N) Displacement is attached (m)
1. 50 N 0.500m
2. 50 N 0.167m
3. 50 N 0.100m
4. 50 N 0.071m
Explanation:
I have asked question in my profile please tell me the answer
Suppose two ships start from point B and travel west. One ship travels at an average velocity of 35 km/h for 2.2 h. Another ship travels at an average velocity of 26 km/h for
2.5 h. What is the final position of each ship?
Answer:
Another ship travels at an average velocity of 26 km/h for
Explanation:
Ship one will cover a distance of 77 km after 2.2 hours and ship two will cover a distance of 65 km after 2.5 hours.
What are average speed and velocity?The average speed of an object is the average distance it covers in a given length of time. The scalar number reflects the average speed. Direction can be replaced with magnitude.
[tex]Average\ speed=Total\ distance/Total\ time[/tex]
Average velocity is a vector quantity. The change in position or displacement divided by the periods of time during which the change occurs is known as average velocity. Depending on how the displacement has been adjusted, the average velocity could be either positive or negative. Meters per second (m/s), or average velocity, is the SI measure for speed.
[tex]Average\ Velocity=Total\ displacement/Total\ time[/tex]
According to the question,
Ship one has an average velocity of 35 km/h for 2.2 hours.
So, total distance covered by ship one = 35 × 2.2 = 77 km.
Ship one has an average velocity of 26 km/h for 2.5 hours.
So, total distance covered by ship one = 26 × 2.5 = 65 km
Hence, the distance covered by ship one is 77 km and ship two will cover 65 km.
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NEED HELP!!!! 15 POINTS!!!!
Which BEST explains why it is important to warm up before strenuous exercise?
A.
It is very hard on the joints when exercise begins without warm up.
B.
It strains the muscles if blood and oxygen levels are not already activated.
C.
Warm-ups limit the oxygen supply, prepping the body for the rush during exercise.
D.
An exercise session should not include more than 30 minutes of aerobic activity.
Answer:
A
Explanation:
or else u would get a muscle pull
Answer:
a
Explanation:
why do the lights in your home come on almost instantaneously when you turn on the switch?
Answer:
here you go
Explanation:
Why do your lights actually come on almost instantaneously? ... Wiring the house in parallel does not make a difference – there is no current flowing through the light bulb when the switch is off no matter how the house is wired. If there were a current already, the light would be on!
Which is the best definition to describe a transfer of energy?
a)Changing energy from one form to another
b)The ability to do work and cause change
c)Stored energy or energy of position
d)The same form of energy moving from one place to another
Answer:
a
Explanation:
How can you return a negatively or positively charged object back to its neutral state?
[tex]\huge\fbox\orange{A} \huge\fbox\red{N}\huge\fbox\blue{S}\huge\fbox\green{W}\huge\fbox\gray{E}\huge\fbox\purple{R}[/tex]
[tex]\huge\underline\mathtt\colorbox{cyan}{For Positively Charged:}[/tex]
By gaining electrons from the ground, the object will have a balance of charge and therefore be neutral. Grounding is the grounding of a positively charged object and involves the transfer of electrons from the ground into the object.
[tex]\huge\underline\mathtt\colorbox{red}{For Negatively Charged:}[/tex]
If it is to have its charge removed, then it will have to lose its excess electrons. Once the excess electrons are removed from the object, there will be equal numbers of protons and electrons within the object and it will have a balance of charge.
A projectile is launched horizontally from a height of 25m and it is observed to land 50m from the base. What was the launch velocity?
The initial horizontal velocity of the projectile is 22.1 m/s.
The given parameters;
height of the projectile, h = 25 mhorizontal distance of the object, R = 50 mThe time of motion of the object is calculated as follows;
h = ut + ¹/₂gt²
where;
u is the initial vertical velocity = 0h = ¹/₂gt²
[tex]t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 25}{9.8} } \\\\t = 2.26 \ s[/tex]
The initial horizontal velocity of the projectile is calculated as follows;
R = vₓt
[tex]v_x = \frac{R}{t} \\\\v_x = \frac{50}{2.26} \\\\v_x = 22.1 \ m/s[/tex]
Thus, the initial horizontal velocity of the projectile is 22.1 m/s.
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Friction due to fluid is also called ___________
Friction due to fluid is also called DRAG
Answer:
Hey mate.....
Explanation:
This is ur answer....
Friction due to fluid is also called drag.
Hope it helps
Brainliest pls!
Follow me! :)
Can someone please give me the answers to this? ... please ...
Answer:
See below:
Explanation:
What you have done seems to be correct, what we can do is just add a box into the center. For the 3rd question, we can just draw a box as nothing is happening. That is all!
Consider marking as brainliest if it helped!
Answer:
Explanation:
good luck
i think
how does a second class lever make our work easier
Answer:
In a second class lever, the load is located between the effort and the fulcrum. If the load is closer to the fulcrum than the effort, then less effort will be required to move the load. If the load is closer to the effort than the fulcrum, then more effort will be required to move the load.
Explanation:
from what i learned, if its farther away from the load, its easier to lift, like a wheel barrel
a boy steps off the end of a high diving board and drops into the water below. it takes the boy 0.78 seconds to reach the water. How high was the diving board?
Answer:
7.644 feet
Explanation:
Free fall means that an object is falling freely with no forces acting upon it except gravity, a defined constant, g = -9.8 m/s2. The distance the object falls, or height, h, is 1/2 gravity x the square of the time falling.
a football quarterback throws a football. after it leaves his hand, what forces are acting on the football? choose all that apply.
golekeeper
Explanation:
because they use hand to save keeper
please help the picture is above !
Answer:
its C- 20
Explanation:
an astronaut on an eva has wandered dangerously far away from the shuttle. she has also exhausted all the fuel in her jet pack. how can she get back to the shuttle?
The conservation of the momentum allows to find the result of how the astronaut can return to the spacecraft is:
Throwing the thruster away from the ship.
The momentum is defined as the product of the mass and the velocity of the body, for isolated systems the momentum is conserved. If we define the system as consisting of the astronaut and the evo propellant, this system is isolated and the internal forces become zero. Let's find the moment in two moments.
Initial instant. Astronaut and thrust together.
p₀ = 0
Final moment. The astronaut now the thruster in the opposite direction of the ship.
[tex]m_f[/tex] = m v + M v '
where m is propellant mass and M the astronaut mass.
As the moment is preserved.
0 = m v + M v ’
v ’= [tex]- \frac{m}{M} \ v[/tex]
We can see that the astronaut's speed is in the opposite direction to the propeller, that is, in the direction of the ship.
The magnitude of the velocity is given by the relationship between the masses.
In conclusion, using the conservation of the momentun we can find the result of how the astronaut can return to the ship is:
Throwing the thruster away from the ship.
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A concave mirror of focal length 10cm forms an inverted image of 40cm from the mirror and 4cm high. Determine the position and size of the object by scale drawing and by calculation
The equation of the constructor of the geomeric optics allows to find the results for the distance and size of the objects are:
Distance from the mirror to the object is: p = 13.3 cm The height of the object is: h = 1.33 cm
The equation of the constructor of geometric optics describes the position of objects and their images for mirrors and lenses.
[tex]\frac{1}{f} = \frac{1}{p} + \frac{1}{q}[/tex]
Where f is the focal length, p and q are the distances to the object and the image, respectively.
They indicate the focal length f = 10 cm, the distance to the image q = 40 cm, that the height s h ’= 4 cm. In the attachment we see a scheme of the system.
Let's find the distance to the object.
[tex]\frac{1}{p\frac{x}{y} } = \frac{1}{f} - \frac{1}{q} \\\frac{1}{p} = \frac{1}{10} - \frac{1}{40}\\\frac{1}{p} = 0.075[/tex]
p = 13.3 cm
The magnification in the ratio of image size to object size. The image is inverted so its height is negative.
[tex]m = \frac{h'}{h} = - \frac{q}{p}\\h = - \frac{p}{q} \ h'\\h = - \frac{13.3}{40}\ (-4)[/tex]
h = 1.33 cm
In conclusion using the equation of the constructor we can find the results for the distance and size of the objects are:
Distance from the mirror to the object is 13.3 cm The height of the object is 1.33 cm
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A 89 kg object is suspended from 2 cables, with an angle of 120 degrees between them. What is the
tension on each cable? (Assume each cable is at an equal angle above the horizontal) Answer in
Newtons.
→ The tension on the cable is 890 N.
The free body diagram is drawed below. Applying the second law of newton:
(you have to transpose the T forces to the 'y' axis). After that:
[tex]\Large \text {$2Tcos(60) = 89 \times 10$}[/tex]
89 x 10 is the Weight Gravitational force (Mass times gravity). Therefore:
[tex]\Large \text {$T = 890$ N}[/tex]
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In a closed system of a cannon and cannonball, which changes would both result in an increase in the kinetic energy of the cannonball when fired from the cannon?
Answer:
the length of the cannon
the power of the gunpowder
Answer:
i would say B decrease mass of cannon or decrease mass of cannon ball
Explanation:
because when you fire the cannon the cannon ball and powder exit the cannon then that leaves the cannon ball and i would say that the explosion would force it out the cannon but would not increase its mass.
calculate the volume of a spare with radius 7cm
Answer:
around 1436.76 cm^3
Explanation:
v = 4/3(3.14)7^3
v = 4/3(3.14)343
v = 4/3(1077.02)
v = 1436.02666667
round up
v = 1436.027
if you use pi, then the answer would be around 1436.76 cm^3
