an astronaut with mass ma is within a satellite that orbits earth at a height h above its surface
Answer:
i really dont know why its such a big deal
Explanation:
An astronaut with mass ma is within a satellite that orbits earth at a height h above its surface. The correct expression for the gravitational force exerted on the astronaut by Earth on the basis described can be,
Fg=G MeMa/r²e
What is gravitational force?
Gravity is a basic interaction in physics that produces mutual attraction between all entities that have mass or energy.
Gravity maintains the planets around the sun and the moon orbiting the Earth. The moon's gravitational pull attracts water, causing ocean tides. Gravity creates stars and planets by attracting the elements that go into their formation.
Gravity waves are 'ripples' in space-time caused by some of the most destructive and powerful occurrences in the Universe. In the year 1916, Albert Einstein used to predicted the existence of gravitational waves which can be popularly known as general theory of relativity.
The gravitational force has the lowest non-contact strength in nature. It adheres to the inverse square law. It is always positive. It is directly proportional to the product of the two bodies' masses.
Thus, the equation can be written as,
Fg=G MeMa/r²e
Learn more about gravitational force:
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WILL MARK BRAINLY!! QUICK HELP PLEASE!
A 40.0 kg rocket produces a
764 N upwards force ("thrust").
What is the net force acting on
the rocket?
Answer:
372Explanation:(40.0)×(9.8)=392
764N-392=372
A single celled organism is found in a sample of water. It contains a nucleus as well as other membrane bound organelles and possesses collagen for movement. This organism most likely belongs to which kingdom?
A. Plantae
B.Archaea
C.Eubacteria
D.Protista
Answer:
protistia
Explanation:
Laura is a star runner of the school's track team. During a trial, her speed was measured to be 9.80 m/s. If Laura's mass is 45.2 kg, her kinetic
energy during the trial was
Answer:
KE = 2.17 E3 J
Explanation:
m = 45.2 kg
v = 9.8 m/s
KE = 1/2mv^2
KE = [(45.2 kg)(9.8m/s)^2]/2
KE = 2.17 E3 J
how much steam must be passed into a mixture of ice and water in order to melt 10 g of ice?
Answer:
about 1.48 grams
Explanation: None
2. Molly thinks, should I wear the red dress or the black dress. This is an example of ___________________.
A. self-concept
B. self-talk
C. self-disclosure
D. self-perception
Answer:
self concept
Explanation:
i think its self concept because she thinks
Explanation:
It is A. self concept. Because if I choose self talk I am talking to my self for example I made a mistake, I did something wrong etc.
water is not used as thermometric liquid.why?
Answer:
Water cannot be used in thermometer because of its higher freezing point and lower boiling point than other liquids . If water is used in a thermometer , it will start phase change at 0[tex]degree\\[/tex]C and 100[tex]degree[/tex]C and will not measure temperature , out of this range . This range is very small as compared to other liquids as mercury , having freezing point about −39[tex]degree[/tex]C and boiling point 356[tex]degree[/tex]C.
Explanation:
If the velocity of an object changed from 30 m/s to 60 m/s over a period of 10 seconds what would the average acceleration be ?
In May 1990 the French TGV train traveled the distance from Paris to Lille, France (127 miles) in 0.819 hours. What was the speed of the TGV in m/s
Answer:
v=69.32 m/s
Explanation:
you have to transfer the distance from mile to meters (from miles to meters multiply by 1609)
so d=204387 m
you have to transfer the time from hour to second (from hour to second multiply by 3600)
so t=2948.4 s
the rule says v=d/t=204387/2948.4= 69.32 m/s
The TGV train has a speed of 69.306 meters per second.
Let suppose that TGV train is travelling at uniform velocity, then we can be calculated its speed by means of the following kinematic equation:
[tex]v = \frac{x}{t}[/tex] (1)
Where:
[tex]v[/tex] - Speed, in meters per second.[tex]x[/tex] - Distance travelled by the train, in meters.[tex]t[/tex] - Time, in seconds.Now we proceed to convert both distance and time in terms of fundamental units:
Distance:
[tex]x = 127\,mi \times 1609\,\frac{m}{mi}[/tex]
[tex]x = 204343\,m[/tex]
Time:
[tex]t = 0.819\,h \times 3600\,\frac{s}{h}[/tex]
[tex]t = 2948.4\,s[/tex]
If we know that [tex]x = 204343\,m[/tex] and [tex]t = 2948.4\,s[/tex], then the speed of the TGV train is:
[tex]v = \frac{204343\,m}{2948.4\,s}[/tex]
[tex]v = 69.306\,\frac{m}{s}[/tex]
The TGV train has a speed of 69.306 meters per second.
We kindly invite you to check this question about kinematics: https://brainly.com/question/24468164
Why does sound travel more quickly through a solid than through a liquid or a gas?
Answer:
things move quickly through a liquid
Explanation:
You go to the store and buy 3 apples. Each apple has a mass of 4.66 grams. What is the total mass of apples you bought.
Remember the difference between a counted and a measured number.
NEEP HELP!
Taking Finals
its 13.98. it's simple multiplication 3* 4.66= 13.98
I need help in Physics pls help me!
20 points for CORRECT ANSWER!!!
Answer:
V = 3.65 m/s
Explanation:
A 325kg box is pulled across a level frictionless surface. What is the weight of the box.
Answer:
the answer is that you will never be able to find two pretty bestfriends
1. While riding a chairlift, a 55-kg skier is raised a vertical distance of 370 m. What is the total change in the skier's gravitational potential energy
Answer:
199,430Joules
Explanation:
Gravitational potential energy is the energy possessed by a falling object due to virtue of its position.
gravitational potential energy = mass * acceleration due to gravity * height
gravitational potential energy = 55 * 9.8 * 370
gravitational potential energy = 539 * 370
gravitational potential energy = 199,430
Hence the total change in the skier's gravitational potential energy is 199,430Joules
ANSWER:
99,430 Joules (in multiple choice question sometimes appear as 200,000J)
Explanation:
Gravitational potential energy is the energy possessed by a falling object due to virtue of its position.
gravitational potential energy = mass * acceleration due to gravity * height
gravitational potential energy = 55 * 9.8 * 370
gravitational potential energy = 539 * 370
gravitational potential energy = 199,430
Hence the total change in the skier's gravitational potential energy is 199,430 Joules (or 200,00J)
please heart!VVV or stars :D vvv
A glass prism causes dispersion or deviation but glass plate doesn't.why?
Answer:
hope this answer helps you.
A shopper in a supermarket pushes a loaded 32 kg cart with a horizontal force of 12 N.
a) How far will the cart move in 3.5 s, staring from rest? (Disregard any friction)
b) How far will the cart move in 3.5 s if the shopper places an 85 N child in the cart before pushing?
Answer: A
Explanation:
I WILL GIVE U 100 POINTS IF U COMPLETE THIS AND GET RIGHT!!!!!!!!!!!!
Answer:
A.
1. when the butter was placed on the spoon it slowly started to boil then began to melt.
2.the order was to heat the bowl, let it boil, then place the butter in.
3.The heat got from the water to the butter by placing it on the spoon then physically moving it into the hot bowl.
4.objects that do not conduct heat are called insulators.
B.
1. When the ice cube got placed into the water it immediately melted.
2.the water from the ice cube to the warm water as soon as it got laced it immediately melted.
3. the heat flowed straight up which made the ice melt really fast.
TABLE A: when I placed the butter in it melted a little bit slower than the ice cube but it still melted very fast.
TABLE B: when I put the colored one in the color slowly dissolved and pushed the color to the middle and the cube melted.
TABLE C: room temp water:75 degrees
cold water:50
hot water:315 degrees
TABLE D: when I blew out the candle the flame went but the smoke started to rise up.
TABLE E: the small beaker heated up quicker and I observed that the less amount of mass the faster it will heat up.
TABLE F: the black piece of paper heated up quicker and I believe its because the darker color the more mount of heat is attracted.
Explanation: I HOPE THIS HELPED! BRAINLESS?
25 points and i will give brainliest +5 star rating to a correct a correct answer!!!!
Green light (520 nm) enters glass with n = 1.52. What is speed of light in the glass?
Answer:
1.97 * 10^8 m/s
Explanation:
Given that:
n = 1.52
Recall : speed of light (c) = 3 * 10^8 m/s
Speed (v) of light in glass:
v = speed of light / n
v = (3 * 10^8) / 1.52
v = 1.9736 * 10^8
Hence, speed of light in glass :
v = 1.97 * 10^8 m/s
what is 0.94kg divided by 2.4n
Answer:
0.39166666666
Explanation:
what element is oco in physics
Answer:
Answer:
Carbon Dioxide
An object at rest has no net force acting on it.
True or False
Answer:
True
Explanation:
The object is at rest, which means it's not moving, so there is no net force on it, according to Newton's First Law.
Can someone help me solve number 3 for chemical equations?
Answer:
I'm pretty sure it should be 4KClO3-->3KClO4+1KCl
Explanation:
A student releases a marble from the top of a ramp and the marble increases speed steadily and travels 190 cm in 4.10 s what's the marbles final speed
Answer:
The value is [tex]v = 92.68 \ cm/s[/tex]
Explanation:
From the question we are told that
The distance traveled is [tex]d = 190 \ cm = 1.9 \ m[/tex]
The time taken is [tex]t = 4.10 \ s[/tex]
Generally from kinematic equation we have that
[tex]s = ut + \frac{1}{2} at^2[/tex]
Here u is the initial velocity of the marble and the value is [tex]u = 0 \ m/s[/tex]
So
[tex]1.90 = 0* t + \frac{1}{2} a (4.10 )^2[/tex]
=> [tex]1.90 = 0* t + \frac{1}{2} a (4.10 )^2[/tex]
=> [tex]a = 0.226 \ m/s^2[/tex]
Generally from kinematic equations we have that
[tex]v = u + at[/tex]
=> [tex]v = 0 +0.226 * 4.10[/tex]
=> [tex]v =0.9268 \ m/s[/tex]
Converting to cm/s
=> [tex]v =0.9268 * 100[/tex]
=> [tex]v = 92.68 \ cm/s[/tex]
Calculate the speed of a dog running through a yard covering 24m in 52s
Answer:
0.46 m/s (meters/second)
Explanation:
speed = distance/timespeed = 24/52speed = 0.461538462 m/sRounding this, we get speed = 0.46 m/sA car traveled 885mi from El Paso, TX to Dallas, TX in 12.5 hours. What was the car's average speed?
Answer:
The car's average speed is 70.8 mph
Explanation:
The given parameters are;
The total distance traveled = 885 miles
The time of travel = 12.5 hours
The average speed is given by the following equation;
[tex]Average \ speed = \dfrac{Total \ Distance \ traveled}{Total \ time \ taken \ to \ travel \ the \ distance}[/tex]
Therefore, we have;
[tex]Average \ speed = \dfrac{885 \ miles}{12.5 \ hours} = 70.8 \ miles \ per \ hour[/tex]
Therefore, the car's average speed = 70.8 mph.
Answer:
The car's average speed is 70.8 mph
Explanation:
A softball pitcher rotates a 0.250 kg ball around a vertical circular path of radius 0.5 m before releasing it. The pitcher exerts a 33.0 N force directed parallel to the motion of the ball around the complete circular path. The speed of the ball at the top of the circle is 13.0 m/s. If the ball is released at the bottom of the circle, what is its speed upon release
Answer:
The value is [tex]u = 27.93 \ m/s[/tex]
Explanation:
From the question we are told that
The mass of the ball is [tex]m = 0.250 \ kg[/tex]
The radius of the circle is [tex]r = 0.5 \ m[/tex]
The force exerted is [tex]F = 33 \ N[/tex]
The speed of the ball on top of the circle is [tex]v = 13.0 \ m/s[/tex]
Gnerally from the law of energy conservation we have that
[tex]PE + W = \Delta KE[/tex]
Here PE is the potential energy of the pitcher which is mathematically represented as
[tex]PE = m * g * (2 r )[/tex]
=> [tex]PE = 0.250 * 9.8 * (2 * 0.5 )[/tex]
=> [tex]PE = 24.5\ J[/tex]
And W is the workdone by the force applied which is mathematically represented as
[tex]W = F * \pi * r[/tex]
=> [tex]W = 33 * 3.142 * 0.5[/tex]
=> [tex]W = 51.84 \ J[/tex]
And [tex]\Delta KE[/tex] is the change in kinetic energy which is mathematically represented as
[tex]\Delta KE = \frac{1}{2} * m * (v^2 - u^2 )[/tex]
=> [tex]\Delta KE = \frac{1}{2} * 0.250 * ( 13^2 - u^2 )[/tex]
=> [tex]\Delta KE = 0.125 * ( 13^2 - u^2 )[/tex]
=> [tex]\Delta KE = 21.125 - 0.125u^2[/tex]
So
[tex]24.5 + 51.84 = 21.125 - 0.125u^2[/tex]
=> [tex]u = 27.93 \ m/s[/tex]
The velocity of the ball released at the bottom is required.
The velocity of the ball released at the bottom is 24.56 m/s
F = Force = 33 N
r = Radius of loop = 0.5 m
m = Mass of ball = 0.25 kg
u = Initial velocity of ball = 13 m/s
v = Final velocity
g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
The energy balance of the system is given by
[tex]F\pi r+mg2r=\dfrac{1}{2}m(v^2-u^2)\\\Rightarrow v=\sqrt{\dfrac{2}{m}(F\pi r+mg2r)+u^2}\\\Rightarrow v=\sqrt{\dfrac{2}{0.25}(33\times \pi\times 0.5+0.25\times 9.81\times 2\times 0.5)+13^2}\\\Rightarrow v=24.56\ \text{m/s}[/tex]
The velocity of the ball released at the bottom is 24.56 m/s.
Learn more:
https://brainly.com/question/1597429?referrer=searchResults
15. Use the chemical equation below to determine how many moles of ammonia
(NH) will be produced from 4 moles of nitrogen gas (N). Assume that there is enough H, for all of the N, to be converted to NH.
N2 + 3H2 + 2NH
8 moles
2 moles
3 moles
4 moles
Answer:
I'm not really sure but I think it is
four
I make you a brainlist helppp
Calculate the
combined mass
of this go kart
and its rider if
the cart exerts a force of 800
N and the car accelerates at
7 m/s2??
Answer:
114.29 kgExplanation:
The mass of the car can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{800}{7} \\ = 114.285714...[/tex]
We have the final answer as
114.29 kgHope this helps you
In which of these reactions is energy released?
A. Exothermic reactions
B. No reactions
C. All reactions
D. Endothermic reactions
Answer:
exothermic reaction
Explanation:
Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light. In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.
A sound wave passes from air into water and then into steel. With each change in medium, the velocity of this wave will a(increase,then decrease b(decrease c(increase d( decrease,then increase ?
Answer:
a
Explanation:
because it can increase anything