Answer:
F = 695.25 N
Explanation:
The force between Mars and Rover can be given by Newton's Law of Gravitation can be written as follows:
F = Gm₁m₂/r²
where,
F = Force of Gravity = ?
G = Universal Gravitational Constant = 6.67 x 10⁻¹¹ N.m²/kg²
m₁ = mass of rover = 74 kg
m₂ = mass of mars = 6.39 x 10²³ kg
r = distance between the centers of mars and rover = 2.1299 x 10⁶ m
Therefore,
F = (6.67 x 10⁻¹¹ N.m²/kg²)(74 kg)(6.39 x 10²³ kg)/(2.1299 x 10⁶ m)²
F = 695.25 N
definition of density
Answer:
the degree of compactness of a substance
Explanation:
So how much pressure that is inside something
what is the final speed of an object that starts from rest and accelerates uniformly at 4.0 meters per second over a distance of 8.0 meters
Question: How is a triple beam balance used to find mass?1. Observe: The riders have masses of 10 grams (top), 100 grams (middle), and 1 gram (bottom). Drag the 100-gram rider to 300. At this position it balances a 300-gram mass.What happens to the pointer? ________________________________________________2. Compare: Place each object on the measurement tray, one at a time. Which objects have a mass greater than 300 grams? ________________________________________________ How do you know? _________________________________________________________
Answer:
1) For the weight to be correct, the pointer must be below the reference (zero) or in it
2) mass greater than 300 g leave the pointer below the reference,
3) put weight on the other arms the pointer gets closer to the reference
Explanation:
1) A three-arm scale is used to determine the weight of a body by successive approximations, starting with the arm with the greatest mass (middle), when the pointer is close to zero without going over, weights are placed on the second arm (above ) weight is placed to bring the pointer closer to the reference without going over and when it is used the arm with the lowest mass is used (below) with this one, masses are placed until reaching the reference,
Taking all the jinetillos placed the total weight, the product of the position of the jinetillo by the precision of the arm and then the three values are added.
In the example given, the jinetillo is placed in position 3 of the 100 arm, so the weight is 300 gr.
For the weight to be correct, the pointer must be below the reference (zero) or in it
2) objects with a mass greater than 300 g leave the pointer below the reference, it must be completed with the other two arms to reach the correct weight
3) when you put weight on the other arms the pointer gets closer to the reference
These littler girls are trying to shoot a question to research for the school science fair. Which question may not be answered through scientific investigation
Answer:
i had this question as well
Explanation:
The magnitude of the force associated with the gravitational field is constant and has a value FF . A particle is launched from point BB with an initial velocity and reaches point AA having gained U0U0 joules of kinetic energy. A resistive force field is now set up such that it is directed opposite the gravitational field with a force of constant magnitude 12F12F . A particle is again launched from point BB . How much kinetic energy will the particle gain as it moves from point BB to point AA ?
Answer:
The kinetic energy of the particle will be 12U₀
Explanation:
Given that,
A particle is launched from point B with an initial velocity and reaches point A having gained U₀ joules of kinetic energy.
Constant force = 12F
According to question,
The kinetic energy is
[tex]U_{0}=Fx[/tex]....(I)
Constant force = 12F
A resistive force field is now set up ,
Resistive force is given by,
[tex]F_{r}=12F[/tex]
When the particle moves from point B to point A then,
We need to calculate the kinetic energy
Using formula for kinetic energy
[tex]U=F_{r}x[/tex]
Put the value of [tex]F_{r}[/tex]
[tex]U=12Fx[/tex]
Now, from equation (I)
[tex]U=12U_{0}[/tex]
Hence, The kinetic energy of the particle will be 12U₀.
please help. ill make you BRAINLIEST
Answer:
because well I dont even know sorryy but you got this
A man walks 30 m to the west than 5 m to the east in 45 seconds.
A). what is his total distance walked?
B). What is his average velocity?
Answer:
35 m
0.56 m/s west
Explanation:
A) Total distance is the length of the path taken.
30 m + 5 m = 35 m
B) Velocity is displacement over time. Displacement is the difference between the final position and the initial position.
If west is -x, and east is +x, then:
Δx = -30 m + 5 m
Δx = -25 m
v = Δx / t
v = -25 m / 45 s
v = -0.56 m/s
v = 0.56 m/s west
The total distance travelled = 35 m and average velocity = 0.55 [tex]m/s^{2}[/tex]
We have a man who walked 30 m to the west than 5 m to the east in 45 seconds.
We have to find out his total distance walked and his average velocity?
Define Average velocity of a body?The average velocity is defined as the rate of change of displacement per unit time.
[tex]v_{avg} = \frac{x_{2} -x_{1} }{t_{2} -t_{1} }[/tex]
According to the question -
A). The total distance travelled will be equal to = [tex]X_{W} +X_{E}[/tex] = 30 + 5 = 35m
Since, the distance travelled is a scalar quantity, we have used simple addition method.
B). In order to calculate the average velocity, first we will calculate the displacement -
Consider the direction to the west as the + x axis, then -
displacement = [tex]30\overrightarrow{a_{x} } - 5\overrightarrow{a_{x} } = 25\overrightarrow{a_{x} }[/tex]
Magnitude of displacement = 25 x | [tex]\overrightarrow{a_{x} }[/tex]| = 25 x 1 = 25 m
[tex]v_{avg} = \frac{25}{45 } = 0.55[/tex] [tex]m/s^{2}[/tex]
Hence, the total distance travelled = 35 m and average velocity = 0.55[tex]m/s^{2}[/tex]
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are pool ball collisions elastic
Yes pool ball collisions elastic
Explanation:
I Think yes
Conjecture: The population of White is 80% of the total population.
Is this conjecture true?
A. No, the percentage of White is found by dividing 301,461,533 by 224,469,780 and gives 1.34%
B. No, the percentage of white is found by diving 301,461,533 by (301,461,533 - 224,469,780) and gives 3.92%
C. Yes.
D. No, the percentage of white is found by dividing (301,461,533 - 224,469,780) by 301,461,533 and gives 25.54%
E. No, the percentage of White is found by diving 224,469,780 by 301,461,533 and gives 74.46%
Answer:
E. No, the percentage of White is found by dividing 224,469,780 by 301,461,533 and gives 74.46%
Explanation:
Remember, the term percentage or finding a percentage means finding the proportion or share out a whole.
From the attached image we could notice that the total population is 301,461,533. According to the rules of mathematics, to find the percentage of White citizens by dividing 224,469,780 by 301,461,533
[tex]\frac{224,469,780}{301,461,533}[/tex] x 100 = 74.46%.
Why do people calculate net force and make force diagrams?
O It allows us to calculate speed of an object
It allows us to predict the mass of objects
It allows us to predict motion and changes in motion
It allows us to calculate mass and weight
The questions at the bottom are 1. Both moving at a constant a velocity.2.Both accelerating.3.Both stopped.4.Bith have a force on them so what is the answer
What is the amount of heat, in calories, given off from a 5 g piece of aluminum when it cools from 80°C to 20°C? The specific heat capacity of aluminum is 0.215 cal/g∙°C. Show your work.
Answer:
Q (heat) = S * m * (T2 - T1) where Q is heat gained (loss), S the specific heat capacity of the substance and T2, T1 are the final and initial temps
Q = .215 cal / (g deg C) * 5 g * (20 - 80) deg C = -64.5 cal
Since the question specifies the heat emitted, then 64.5 cal is the
heat emitted (loss).
Which word contains a prefix that means against?
A
microwave
B
antidepressant
с
macrobiotic
D
overdramatic
a ship sends a sound wave straight to the seabed and receives the echo 1.5s later. the speed of sound in sea water is 1500 m/s how deep is the sea at that place
Answer:
Approximately [tex]1125\; \rm m[/tex].
Explanation:
Calculate the distance that sound would travel in [tex]1.5\; \rm s[/tex] at [tex]1500\; \rm m \cdot s^{-1}[/tex]:
[tex]s = v\cdot t = 1500\; \rm m\cdot s^{-1}\times 1.5\; \rm s = 2250\; \rm m[/tex].
Sound waves in this question here needs to:
travel from the ship to the bottom of the sea,get reflected at the ocean floor, andtravel back to the ship from the bottom of the ship.Hence, the total distance that sound travelled in that [tex]1.5\; \rm s[/tex] would be the sum of:
the length of the path from the ship to the ocean floor, and the length of the path from the ocean floor back to the ship.Therefore, the distance [tex]2250\; \rm m[/tex] here is supposed to be approximately twice the depth of the sea at that place. The depth of the sea would thus be approximately:
[tex]\displaystyle \frac{1}{2}\times 2250\; \rm m = 1125\; \rm m[/tex].
7.In North America, a magnetic compass will point to
a - magnetic north
b- Santa's workshop
C - the South Pole
d - Italy
Answer:
I think then answer for this question is number c. the South pole
Jason walks 20 m East, turns around and 20 m West, Finally, he walks 10 rn North. This takes 20 s. what is Jason's velocity
Answer:
0.5 m/s north
Explanation:
Take east to be +x, west to be -x, north to be +y, and south to be -y.
His displacement in the x direction is:
x = 20 m − 20 m = 0 m
His displacement in the y direction is:
y = 10 m
His total displacement is therefore 10 m north.
His velocity is equal to displacement divided by time.
v = 10 m north / 20 s
v = 0.5 m/s north
9 write the Greek etymological meaning of Tracheophyta.
Answer:
Etymology. From Ancient Greek τραχεῖα (trakheîa, “windpipe”) + -ophyta; compare English trachea
Explanation:
Measure Your Reaction Time Here's something you can try at home-an experiment to measure your reaction time. Have a friend hold a ruler by one end, letting the other end hang down vertically. At the lower end, hold your thumb and index finger on either side of the ruler, ready to grip it. Have your friend release the ruler without warning. Catch it as quickly as you can. If you catch the ruler 6.4 cm (~2.5 inches) from the lower end, what is your reaction time?
Answer:
Explanation:
The reaction time will be equal to the time the ruler takes to fall by 6.4 cm .
the ruler is falling with acceleration due to gravity which is equal to
9.8 m /s²
S = ut + 1/2gt²
s is distance of fall , u is initial velocity , t is time and g is acceleration due to gravity .
6.4 = 0 + 1/2 x 9.8 t²
t = 1.14 s .
So reaction time is 1.14 s .
Answer:
0.114s
Explanation:
--------------------------------------------------------------------------------------------------------------
The reaction time is simply how long it takes the ruler to fall 6.4 cm.
For this problem, all you gotta do is convert your units and then plug them into a kinematic equation for t (time).
{*0.01 the conversion from cm to m}
--------------------------------------------------------------------------------------------------------------
Units:
Δx (change in x) or d = 6.4 cm = 0.064m
Vi = 0 m/s
a = 9.81 m/s^2
t = ?
--------------------------------------------------------------------------------------------------------------
[tex]d = Vi * t + \frac{1}{2} *a*t^{2}[/tex]
(0.064) = 0 * t + 1/2 * (9.81) * t^2
↓
0.064 = 1/2 * (9.81) * t^2
↓
0.064 = 4.905 * t^2
↓
0.01304791 = t^2
↓
t = 0.114s
--------------------------------------------------------------------------------------------------------------
Your reaction time is 0.114s
why would a sound wave travel faster through a solid than a gas? Why can they not travel in outer space (which is a vacuum) at all? explain
Answer:
They travel fastest when the particles are able to collide more. Because there is no medium in a vacuum, it will travel the fastest. ... Solids, because of how close the particles are.
Explanation:
They travel fastest when the particles are able to collide more. Because there is no medium in a vacuum, it will travel the fastest. ... Solids, because of how close the particles are.
A virtual image of a marble is located 13 cm in front of a diverging lens with a focal length of 29 cm.
Where is the marble located?
PLS ANSWER AM IN DESPERATE NEED OF HELP
Answer:
Image distance = 23.6cm
Explanation:
Given
[tex]Focal\ Length\ (f) = 29cm[/tex]
[tex]Object\ Distance (u) = 13\ cm[/tex]
Required
Determine the image distance (v)
This can be calculated using:
[tex]\frac{1}{f} = \frac{1}{u} + \frac{1}{v}[/tex]
[tex]\frac{1}{29} = \frac{1}{13} + \frac{1}{v}[/tex]
Collect Like Terms
[tex]\frac{1}{v} = \frac{1}{29} - \frac{1}{13}[/tex]
[tex]\frac{1}{v} = \frac{13 - 29}{29 * 13}[/tex]
[tex]\frac{1}{v} = \frac{-16}{377}[/tex]
[tex]v = \frac{-377}{16}[/tex]
[tex]v = -23.5625[/tex]
[tex]v = -23.6\ cm[/tex]
This implies that the image distance is 23.6cm and it is a virtual image.
The kinetic energy of an object increases as its ____ increases.
Question 12 options:
gravitational energy
potential energy
specific heat
velocity
Answer:
velocity
Explanation:
velocity is the answer
The kinetic energy of an object increases as its velocity increases. The correct option is D.
An object's kinetic energy is linearly related to the square of its velocity. In other words, an object's kinetic energy grows more quickly the faster it moves. The equation below describes this relationship:
Kinetic Energy = (1÷2) × mass × velocity²
Therefore, the increase in kinetic energy of an item depends on its velocity. Potential energy, not kinetic energy, includes gravitational and potential energy.
Specific heat is a quality associated with a substance's ability to retain heat; it is unrelated to the kinetic energy of an object.
Thus, the correct option is D.
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Your question seems incomplete, the probable complete question is:
The kinetic energy of an object increases as its ____ increases
A. gravitational energy
B. potential energy
C. specific heat
D. velocity
To ancient peoples, why were planets special?
Answer:
Planets were like gods.
Explanation:
To the people of many ancient civilizations, the planets were thought to be deities. Our names for the planets are the Roman names for these deities. For example, Mars was the god of war and Venus the goddess of love.
pls help with these two last questions
Answer:
F = 50[N], to the left.
v = 10.52 [m/s]
Explanation:
First problem
In order to solve this problem we must apply Newton's laws, in such a way that we must perform a summation of forces on the horizontal axis. In this way we will analyze each force and the direction of action.
The offensive player is applying a force of 100N to the right, while the defensive player applies a force of 150N to the left. In this way performing the summation of forces we have.
100 - 150 = F
F = - 50 [N]
Note: The negative sign indicates that the resulting force is to the left.
Second problem
We must remember that the definition of speed is equal to the relationship between distance over time.
x = distance = 100 [m]
t = time = 9.5 [s]
v = x/t
v = 100/9.5
v = 10.52 [m/s]
A car traveling at a speed of 30 m/s comes to a stoplight. How much time will it take for the car to stop if its acceleration is -4.0 m/s2?
A) 0.75 sec
B) 1.3 sec
C) 7.5 sec
D) -7.5 sec
Answer:
i belive its a or c
Explanation:
A crane lifts 4 bricks per minute through a height of 1.5m. Find the power that is expected if each brick weighs 100N
A. 2.5w
B. 10.0w
C. 150.0w
D. 600.0w
At the end of the school day, at exactly 2:30 pm, a group of students run out of the school building and reach the edge of the school property at 2:30:45 s. Which of the following correctly describes the motion in terms of time?
Question 2 options:
A)
t1= 0, t2 = 2:30:45 s, ∆t = 45 s
B)
t1= 2:30, t2 = 45 s
C)
∆t = 2:30
D)
t2= 2:30:45 s, ∆t = 45 s
Explanation:
Initial time, t₁ = 2:30 pm
Final time, t₂ = 2:30:45
We need to find the motion of students in terms of time. Final time is 45 seconds more than the initial time.
Change in time,
[tex]\Delta t=t_2-t_1\\\\\Delta t=2:30:45-2.30\\\\\Delta t=45\ s[/tex]
Hence, this is the required solution.
The students need 45 seconds to reach out at the edge of the school property with the final interval of 2:30:45 s. Hence, option (D) is correct.
What is a time interval?The difference between the moment of starting an event and the completion of the same is known as the time interval.
Given data -
The exact time to start the day at school is, t1 = 2:30 pm.
The time given to reach the edge of the school property is, t2 = 2:30:45 s.
In order to describe the motion, we need to obtain the change in the time interval. Then the expression for the change in the time interval is,
Δt = t2 - t1
Solving as,
Δt = 2:30:45 - 2:30
Δt = 45 s
Thus, we can conclude that the students need 45 seconds to reach out at the edge of the school property with the final interval of 2:30:45 s.
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who was the creator of sports
Answer:
James Naismith (November 6, 1861 – November 28, 1939) was a Canadian-American physical educator, physician, Christian chaplain, sports coach, and innovator.
Explanation:
Select the appropriate shape for the given volume formula.
V = trh
va
V = jwh
V=
Answer: hope this helps
Explanation:
A wildebeest and chicken participate in a race over a 2.00km long course. the wildebeest travels at a speed of 16.0m/s and chicken can do 2.50m/s. the wildebeest runs for 1.600km and then stops to tease the slow-moving chicken, which eventually passes by. the wildebeest waits for a while after the chicken passes and then run toward the finish line. both animal cross the finish line at the exact same instant. assume boat animals, when moving, move steadily at their respective speed.
(a) how far (in m) is the chicken from the Finish Line when the wildebeest resume the race?
(b) for how long in time (in s) was the wildebeest stationary?
Answer:
(a) The distance of the chicken from the finish line is 62.5 m
(b) The stationary time of the wildebeest is 675 s
Explanation:
Given;
total distance traveled by wildebeest and chicken, d = 2 km = 2000 m
speed of the wildebeest, [tex]v_w[/tex] = 16 m/s
speed of the chicken, [tex]v_c[/tex] = 2.5 m/s
Time for wildebeest to finish the race without stopping, 2000 / 16 = 125 s
Time for chicken to finish the race without stopping, 2000/2.5 = 800 s
(b) for how long in time (in s) was the wildebeest stationary?
t(stationary) = t(chicken) - t(wildebeest)
t = 800s - 125 s
t = 675 s
(a) how far (in m) is the chicken from the Finish Line when the wildebeest resume the race?
The time taken for the wildebeest to run 1.6 km (1600 m) is given by;
t = 1600 / 16 = 100 s
The total time spent by the wildebeest before it resumed the race = stationary time + 100s
t (total) = 675 s + 100 s = 775 s
Distnace traveled by the chicken when the wildebeest resumed the race = 2.5m/s x 775s = 1937.5 m
Thus, the distance of the chicken from the finish line = 2000 m - 1937.5 m
the distance of the chicken from the finish line = 62.5 m
According to the question,
Distance, [tex]S = 2 \ km \ or \ 2000 \ m[/tex][tex]S_1 = 1.6 \ km \ or \ 1600 \ m[/tex]
Speed, [tex]V_w = 16 \ m/s[/tex][tex]V_c = 2.5 \ m/s[/tex]
Time, [tex]t_1 = \frac{S_1}{V_w}[/tex][tex]= \frac{1600}{16}[/tex]
[tex]= 100 \ s[/tex]
[tex]t_2 = \frac{400}{16}[/tex]
[tex]= 25 \ s[/tex]
Now,
→ [tex]T= \frac{S}{V_c}[/tex]
[tex]= \frac{2000}{2.5}[/tex]
[tex]= 800 \ s[/tex]
(a)
Distance will be:
→ [tex]S_c' = V_c\times t_2[/tex]
By substituting the values,
[tex]= 2.5\times 25[/tex]
[tex]= 62.5 \ m[/tex]
(b)
Time will be:
→ [tex]T_{static} = T-(t_1+t_2)[/tex]
[tex]= 800-125[/tex]
[tex]= 675 \ s[/tex]
Thus the responses above are correct.
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Ability to make things move is called
Answer:
Force
Explanation:
You can't "make" things move but you can apply enough force on to an object for it to move, pls brainliest!
