Answer:
799 m
125 m/s
Explanation:
Take down to be positive. Given:
v₀ = 0 m/s
a = 9.8 m/s²
t = 12.77 s
Find: Δy and v
Δy = v₀ t + ½ at²
Δy = (0 m/s) (12.77 s) + ½ (9.8 m/s²) (12.77 s)²
Δy ≈ 799 m
v = at + v₀
v = (9.8 m/s²) (12.77 s) + 0 m/s
v ≈ 125 m/s
A bullet is fired straight up with a muzzle velocity of 1200 ft/s. How high does the bullet go, neglecting any air resistance?
The height of the bullet as it travels is 72727.27 ft.
What is height?Height is the vertical distance between two points. The unit of height is meter (m).
To calculate the height the bullet will go, we use the formula below
Formula:
v² = u²+2gH.............. Equation 1Where:
v = Final velocity of the bulletu = initial velocity of the bulletg = acceleration due to gravityH = Height the bullet will go.Make H the subject of the equation
H = (v²-u²)/2g................ Equation 2From the question,
Given:
u = 1200 ft/sv = 0 m/s (at maximum height)g = -9.8 m/s² (against gravitational force)Substitute these values into equation 2
H = (0²-1200²)/2×(-9.8)H = -1440000/-19.8H = 72727.27 ft.Hence, The height of the bullet as it travels is 72727.27 ft.
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In certain cases, using both the momentum principle and energy principle to analyze a system is useful, as they each can reveal different information. You will use the both momentum principle and the energy principle in this problem.A satellite of mass 7500 kg orbits the Earth in a circular orbit of radius of 8.7 106 m (this is above the Earth's atmosphere).The mass of the Earth is 6.0 1024 kg.What is the magnitude of the gravitational force on the satellite due to the earth
Explanation:
The gravitational force equation is the following:

Where:
G = Gravitational constant = 
m1 & m2 = the mass of two related objects
r = distance between the two related objects
The problem gives you everything you need to plug into the formula, except for the gravitational constant. Let me know if you need further clarification.
1. You set the thermostat in your house to 70 degrees so that when it goes above that temperature the air conditioner will turn on. What is the feedback of this system? 2. You set the thermostat in your house to 70 degrees so that when it goes above that temperature the air conditioner will turn on. What is the input of this system?
PLEASE HELP
Answer:
Negative Feedback...... Temperature
Explanation:
as the Temperature increase more than the set point the air conditioner turn on to lower the temperature so that means it is Negative feedback because it is not INHANCING the temperature
Input should be Temperature or Heat because AC turns on when the temperature is getting above 70 degrees
NOW WHERE IS MY BRAINLIESTTTT
A box sits at the top of an incline that is 50.0 cm tall and that makes an angle of 25° with the ground. The box has a mass of 2.0 kg. It is given an initial speed of 3.0 m/s down the incline. If the coefficient of kinetic friction between the box and the incline is 0.10, how long does it take the box to reach the bottom of the incline?
As the box sits at the top of an incline that is 50.0 cm tall and makes an angle of 25° with the ground, The time it takes to reach the bottom of the incline is mathematically given as
t=0.148s
What is the time it takes the box to reach the bottom of the incline?Generally, the equation for the acceleration is mathematically given as
[tex]a=g(sin\theta-uscos\theta)[/tex]
Therefore
a=(9.8sin-(0.15cos35))
a=4.417
Thereofore
v^2=v0^2+2al
[tex]v^2=V0^2+2ahsin\theta\\\\V^2=(2.0+2(4.417))*60*0.01sin35[/tex]
v=2.6533
In conclusion, The time t is
t=v-v0/a
2.65-20/4.417
t=0.148s
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Where is the stigma located?
Answer:
At the tip of the pistil
Explanation:
Hope it helped!
29N, 60° +59N, 125° + 72N, 261°
Vectors
389wujh
which means it 240C
A bird uses 10 N of force to pull a worm out of the ground a distance of 3 inches. How much work did the bird do?
Answer:
The work done by the bird is 0.762 J
Explanation:
Given;
force applied by the bird, f = 10 N
distance the bird moved the worm, d = 3 inches = 0.0762 m
The work done by the bird is given by;
W = F x d
where;
W is the work done by the bird
d is the distance the bird moved the load
Substitute the given values and estimate the work done by the bird;
W = 10 x 0.0762
W = 0.762 J
Therefore, the work done by the bird is 0.762 J
differentiate kinetic energy from potential energy
The main difference between potential and kinetic energy is that one is the energy of what can be and one is the energy of what is. In other words, potential energy is stationary, with stored energy to be released; kinetic energy is energy in motion, actively using energy for movement.
Hope it helps you! :)
Answer:
Potential energy is the energy that happens before kinetic energy, it might be slow and preparing for the kinetic energy act. Kinetic energy is the outcome of the potential energy. You can say a man climbing a hill with his bike is potential energy, and when he rides his bike down is kinetic energy
A 75.0-kg athlete performs a single-hand handstand. If the area of the hand in contact with the floor is 125 cm2, what pressure is exerted on the floor
The pressure exerted on the floor by the athlete having a mass of 75 Kg is 58800 N/m²
How to determine the force
Mass (m) = 75 KgAcceleration due to gravity (g) = 9.8 m/s²Force (F) =?F = mg
F = 75 × 9.8
F = 735 N
How to determine the pressure Force (F) = 735 NArea (A) = 125 cm² = 125×10¯⁴ m²Pressure (P) =?P = F / A
P = 735 / 125×10¯⁴
P = 58800 N/m²
Thus, the pressure exerted on the floor is 58800 N/m²
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Select the correct answer.
In the "Describe the situation" step of the decision-making model, which of the following questions may be helpful to ask yourself?
А What decision needs to be made? OB. Why must this decision be made? OC. How will this decision affect me and others?
OD. All of the above
Answer:
d
Explanation:
A transformer has 500 volts applied to the primary side and 10,000 volts are measured
on the secondary side. If 10mA is applied to the primary side. What is the anticipated
current on the secondary side? Is this a step-up or step down transformer?
Answer:
0.5 mA, step-up transformer
Explanation:
Power is constant
V * I = constant
500 V * 10 mA = 10,000 V * I
so I = 0.5 mA
From 500 V increases to 10,000 V, so it is a step-up transformer
How does the organization know what their needs and expectations are ?
Answer:
When scientific knowledge changes overtime, it can be to anything at anytime. The Explosion in what we know about life form is important and change because we might have a plant we can’t touch or something like that. That is not the only thing that is important about how scientific knowledge change over time it is also the food pyramid. We know that especially The Explosion in What We Know About Life Forms, is because there might be like a new plant we can’t touch because say it is potions or something. According to the life forms article people are wondering if scientist have found all the living species on earth yet
Explanation:
Which of the following best explains why engineers are constantly looking for innovative ways to investigate
and improve fluid power designs?
Changes in fluid power systems lead to increased sustainability, such as decreases in fuel costs and carbon emissions.
Changes in fluid power will reach all different types of applications beyond their current uses.
Changes in fluid power will not benefit efficiency ratings but will decrease the costs of products.
Changes are necessary as more designs and products are created and more power systems are required.
Answer:
Explanation:
What was the answer Im stuck on it rn...
Answer:
Changes in fluid power systems lead to increased sustainability, such as decreases in fuel costs and carbon emissions.
Explanation:
what is true about a horizontally launched projectile?
Answer:
it has lateral momentum
Explanation:
it explains itself
Sand and salt are poured into a single beaker. The result is a mixture because_____?
Answer:
Sand and salt are poured into a single beaker. The result is a mixture because they can be separated by simple and easy physical means.
Explanation:
Mixture : Properties :
They are put in a indefinite proportion.They are physically mixed with each other.They can be separated by physical and easily methodsConstituents retain their own propertiesNow let us see these in the perspective of the question :
We could have put more of salt and less of sand, still it would not have become a compound. We had poured it into a single beaker with some physical means.We can use sedimentation and evaporation to separate them. After separating them, the will retain their own properties, it is not that the salt will become bitter or the sand will start not allowing the water to flow through it.These are some few reasons why these getting mixed, becomes a mixture, and we can choose any one point of the properties of mixture and give the answer.
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How can you strengthen the magnetic force of an electromagnet? (check all that apply)
(I'M TAKING TEST PLEASE HELP)
A. Increase the voltage of the battery attached to the electromagnet.
B. Increase the wire coils wrapped around the metal core.
C. Spread out the wire coils wrapped around the metal core.
D. Increase the number of batteries attached to the electromagnet.
1 wrapping the coil around a piece of iron (such as an iron nail)
2 adding more turns to the coil.
3 increasing the current flowing through the coil.
A large toy car has a mass of 15 Kg and is pushed horizontally with a force of 2 N. Assume friction is so small it can be ignored. What is the acceleration?
Answer:
0.133 m/s²
Explanation:
F=ma
F is force
m is mass
a is acceleration
F=ma
2=15.a
a=2/15
a=0.133 m/s²
Amanda has started running as her primary form of exercise, but she's getting bored with it and finds excuses to procrastinate. It's also getting really hot outside now that it's summer, and Amanda's skin is sensitive to the sun. She has a significant budget available to help her fix the problem but is unsure how to spend the money.
What might be the most appropriate purchase for Amanda?
ANSWER please ⬆️⬆️⬆️ correctly! GIVING OUT BRAINLY STARS!!!
Answer:
: An app thr features menu planning with healthy recipes and pairs with a calorie tracking tool
convert 10 erg into joule
Answer:
0.000001
Explanation:
Went to google converter.
What occurs during stage one sleep
Answer:
Stage one of sleep, also known as the transitional phase, occurs when one finds themselves floating in and out of consciousness. During this NREM stage, you may be partially awake while your mind begins to drift off. This period of drowsiness eventually leads to a light sleep
Explanation:
i found it on google
QUESTION 4
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If a car is moving at 37 km/h for 42 min, what is the distance that the car has traveled. (Give your answer in terms of meters and round to
the nearest whole number.)
Answer:
s=25956m
Explanation:
first 37 km/h is 10.3 m/s
then 42 min is 2520s
finally s=vt => s=2520s*10.3m/s
s=25,956m
Answer:
25956
Explanation:
Convert 37km/h to m/s =10.3m/s
Where s=vt
S=10.3×2520
S=25,956
S=25,000
Help please it’s urgent
Which particles have more speed: Solid or Liquid? Why?
A ball traveling at 15 m/s hits a bat with a force of 200N. How much force does the bat (moving at 20m/s)
hit the ball with?
O 200
O 15
O 20
O 20
Answer:
200 N
Explanation:
Given that,
A ball traveling at 15 m/s hits a bat with a force of 200 N.
We need to find the force that the bat moving at 20 m/s hit the ball with.
We know that, this probelm is based on Newton's third law of motion. The force that the ball exerting on bat should be equal to the force that the bat exerting in the ball but in opposite direction.
It would mean that the ball hits the ball with a force of 200 N. Hence, the correct option is (a).
A boulder of mass 4 kg rolls over a cliff and reaches the beach below with a velocity of 20 metres per second minus 1.
what is the kinetic energy of the boulder when it lands?
what is the potential energy on the cliff?
How high is the cliff??
Given:-
Mass of boulder = 10kg
Final Velocity = 15m/s
Acceleration due to gravity = +10m/s
To Find:-
The kinetic energy of the boulder as it lands
The potential energy of the boulder when it was at the top of the cliff
The height of the cliff
Formulae used:-
Kinetic energy = mv²/2
Potential energy = mgh
Now,
We will first find the Kinetic enrgy,
→ K. E = ½mv²
→ K. E = ½ × 10 × (15)²
→ K. E = 5 × 225
→ K. E =1125J
But we know that when the body starts moving the Potential enrgy of the body starts Converting into Kinetic enrgy. Before reaching to the last spot it has equal kinetic energy and Potential energy.
Therefore,
→ mgh = 1125J
The Potential enrgy of the boulder when it was on top is 1125J
Now,
→ mgh = 1125J
→ 10 × 10 × h = 1125J
→ 100h = 1125J
→ h = 1125/100
→ h = 11.25m
Hence, The Height of the Cliff is 11.25m
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Rihanna can go from 0-60 miles per hour in 3.5 seconds. Calculate the acceleration.
Please show ALL work and CIRCLE your answer.
Answer:
7.66 m/s²
Explanation:
The following data were obtained from the question:
Initial velocity (u) = 0 mph
Final velocity (v) = 60 mph
Time (t) = 3.5 s
Acceleration (a) =.?
Next, we shall convert mile per hour (mph) to metre per second (m/s). This can be obtained as follow:
Recall:
1 mph = 0.447 m/s
Initial velocity (u) = 0 mph
Initial velocity (u) = 0 × 0.447 = 0 m/s
Final velocity (v) = 60 mph
Final velocity (v) = 60 × 0.447 = 26.82 m/s.
Finally, we shall determine the acceleration of Rihanna as follow:
Initial velocity (u) = 0 m/s
Final velocity (v) = 26.82 m/s.
Time (t) = 3.5 s
Acceleration (a) =.?
a = (v – u) /t
a = (26.82 – 0) / 3.5
a = 26.82 / 3.5
a = 7.66 m/s²
Thus, the acceleration of Rihanna is 7.66 m/s²
What will make it hard to remember that blood is an organ?
A - it is red
B - it has parts
C - it is a liquid
D - it moves
Answer:
C . it is a liquid
hope it helps you
a girl on a bridge throws a rock straight down at -12.5 m/s. it hits the ground 38.4 m below. How much time did it take?
[tex]\\ \rm\rightarrowtail s=ut+\dfrac{1}{2}gt^2[/tex]
[tex]\\ \rm\rightarrowtail 38.4=12.5t+4.9t^2[/tex]
On solving further we get
t=1.8sA girl on a bridge throws a rock straight down at -12.5 m/s.the time required to hit the ground 38.4 m below is 4.35 s.
Given:
Speed, u = -12.5 m/s
Distance, d = 38.4 m/s
There are three equations of motion present. For the given question, we will use the second equation of motion.
The second equation of motion helps in the determination of velocity, time, and distance. For the given question, we have initial velocity, and distance, to find time we can use the second equation of motion.
From the second equation of motion:
[tex]s = ut + 1/2 at^2\\38.4 = -12.5t - 9.8/2* t^2\\\4.9t^2 - 12.5 t -38.4 = 0[/tex]
Solving the equation, the required time is:
[tex]t = 4.35 s[/tex]
Hence, the time required to hit the ground 38.4 m below is 4.35 s.
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What variables do you think affect the strength of the force of gravity between two objects?.
Answer:
Mass and distance.
Explanation:
The force of gravity is proportional to the masses of the two objects and inversely proportional to the square of the distance between them.
Condition when an organ is impaired sickness
Answer:
As traditionally used, impairment refers to a problem with a structure or organ of the body; disability is a functional limitation with regard to a particular activity; and handicap refers to a disadvantage in filling a role in life relative to a peer group.
Explanation:
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