An airplane is cruising at a speed of 250 m/s. If the airplanes engines provide a forward force of 19,540 N, calculate the force of the air resistance (friction) that is acting on the plane.
Answers
Answer:
19,540 N
Explanation:
if you have a force at an angle in order to get it with the horizontal you get the Force times cosine the angle and if you want it with the vertical you got the Force times sine the angle
Related Questions
How much work (MJ) must a car produce to drive 125 miles if an average force of 306 N must be maintained to overcome friction?
Answers
Answer:
The right solution is "61.557 MJ". A further explanation is given below.
Explanation:
The given values are:
Force,
F = 306 N
Drive,
D = 125 miles,
i.e.,
= 201168
meters
As we know,
The work done will be:
= [tex]F\times S[/tex]
On substituting the given values, we get
= [tex]306\times 201168[/tex]
= [tex]61557408 \ J[/tex]
On converting it in "MJ", we get
= [tex]61.557\times 10^6 \ J[/tex]
= [tex]61.557 \ MJ[/tex]
A 50kg gymnast is bouncing on a trampoline. If she is going down at 5m/s when she lands on the trampoline, and it bouncesher up in the opposite direction at a velocity of 4m/s, whatis her change in momentum?
Answers
Answer:
450 kgm/s upward
Explanation:
From the question,
Change in monentum = mass× change in velocity
ΔM = mΔv....................... Equation 1
ΔM = m(v-u).................. Equation 2
Where ΔM = Change in momentum, m = mass of the gymnast, v = final velocity, u = initial velocity
Given: m = 50 kg, v = -4 m/s. u = 5 m/s
Substitute these values into equation 2
ΔM = 50(-4-5)
ΔM = 50(-9)
ΔM = -450 kgm/s
Hence the change in momentum of the gymnast is 450 kgm/s upward
answer this plsss
A mobile phone operates at 900 MHz.
What wavelength does it use?
Answers
Answer:
The wavelength = 0.3333 meters at 900 MHz, therefore, = /4 = 0.08333 meters.
(20 points) What are wispy looking clouds, usually at high altitudes called?
stratus clouds
nimbus clouds
cirrus clouds
cumulus clouds
Answers
Answer:
the answer is c cirrus clouds
Explanation:
Mercury is a very small planet, with a surface that is exposed directly to space. This is because the planet has practically no
atmosphere. Normally, no atmosphere would mean very cold, but it is very hot on Mercury. Why?
Answers
The surface of Mercury looks much like Earth's moon. ... On its dark side, Mercury gets very cold because it has almost no atmosphere to hold in heat and keep the surface warm. The temperature can drop down to minus 300 degrees Fahrenheit. Sunlight never reaches into the bottoms of some craters near Mercury's poles.
Answer: B
Because Mercury is the closest planet to the sun
Explanation:
Hope this helps
If an element has 20 protons and 20 neutrons in the nucleus of its atoms , what is the mass number of the atom?
Answers
Answer:
A=z+n
A=20+20
A=40
Explanation:
Not sure if I'm correct but I was taught that mass number is calculated by A=z+n where A is the mass number, z is the proton number and n is the number of neutrons.
True or false:
1.Gravity is the weakest universal force, but it is the most effective over long distances.
True or false:
2.An artificial satellite in a low orbit will slow down and lose altitude due to the pull of Earth's gravity.
True or false:
3.Electromagnetic force is associated with charged particles.
Answers
Here is a picture showing how two magnets will stick to one another when opposite poles align. When these magnets are pulled
slightly apart, does the attractive force between them still exist?
A)
Yes, but the new attractive force is due to gravity.
B)
No, since they are not touching, no force is at work.
Yes, even though they are not touching, they are pulling on one another.
D)
No, when the magnets are apart, they exert a repulsive force on one
another
Answers
Answer:
A
Explanation:
The others are only when the poles are the same as in south pole and south pole however north pole and south pole do connect cause they are oppisites
heathers uncle has HIV/Aids .after visiting ,heathers uncle kisses her good bye on the cheek. Should heather and her uncle be concerned about HIV transmission ?
Answers
Answer:
no
Explanation:
HIV transmits only during fluid interaction, only if she Heather had an cut exposing the inner skin then HIV can be transmitted
which of the following power plants does not use thermal energy to produce electricity?
a) fossil fuel power plant
b) nuclear power plant
c) geothermal power plant
d) hydroelectric power plant
Answers
Answer: d
Explanation:
Two charges of 5 x 10-6 C are a certain distance apart. These two positive charges experience 3.6 N of repelling electrical force between them. How far apart are these charges?
Answers
Answer:
r = 0.2499 m
Explanation:
Use Coulomb's Law: [tex]F_{e} = kq_{1}q_{2} / r^{2}[/tex] where Fe is the electric force, q1 and q2 are the 2 charges respectively, k is a constant (8.99*10^9 N • m^2 / C^2) and r is the distance.
[tex]3.6 N = (8.99*10^{9})(5*10^{-6})(5*10^{-6}) / r^{2}[/tex]
r = 0.2499 m
The distance that should be apart from these charges should be considered when the r = 0.2499 m.
Calculation of the distance apart:Since
Two charges of 5 x 10-6 C are a certain distance apart. These two positive charges experience 3.6 N of repelling electrical force between them
So
here we use Columb law
Electric force = k * two charges * two charges)r^2
3.6 N = (8.99*10^9) * ( 5 * 10^-6) * (5*10^-6)r^2
r = 0.2499 m.
Hence, The distance that should be apart from these charges should be considered when the r = 0.2499 m.
Learn more about force here: https://brainly.com/question/15866225
Sam goes to a friend's house by bike. His friend's house is 350m away. The journey takes 50s. What is Sam's average speed?
Answers
V=350m/50s
V=7m/s
Answer:
Sam's average speed was 7ms-1
Explanation:
speed= distance / time
speed= 350 / 50
speed= 7 metres per second.
Suppose you have a 34.9 m length of copper wire. If the wire is wrapped into a solenoid 0.240 m long and having a radius of 0.0510 m, how strong is the resulting magnetic field in its center when the current is 11.0 A?
Answers
Answer:
the strength of the magnetic field inside the solenoid is 6.278 x 10⁻³ T.
Explanation:
Given;
length of the wire, = 34.9 m
length of solenoid, L = 0.24 m
radius of the solenoid, r = 0.051 m
current in the solenoid, I = 11.0 A
The number of turns of the wire is calculated as follow;
[tex]N = \frac{34.9}{2\pi \times 0.051} = 109 \ turns[/tex]
The strength of the magnetic field inside the solenoid is calculated as follows;
[tex]B = \mu_0 (\frac{N}{L} )I\\\\B = 4\pi \times 10^{-7} \times (\frac{109}{0.24} )\times 11.0 \\\\B = 6.278 \times 10^{-3} \ T[/tex]
Therefore, the strength of the magnetic field inside the solenoid is 6.278 x 10⁻³ T.
If a force is applied to an object, which of the following must be true?
Answers
Answer:
D. The force applied will contribute to the total net force.
good luck, i hope this helps :)
Explain
(0) what is meant by regeneration,
(ii) why an analogue signal cannot be regenerated
Answers
Explanation:
1.) Regeneration is the natural process of replacing or restoring damaged or missing cells, tissues, organs, and even entire body parts to full function in plants and animals.2.) When noise is added to analogue signals, it usually sounds like background hiss. Such noise can not be removed so the original clean signal can not be re-created or re-generated.
Which formula represents the law of conservation of energy?
Answers
Answer:
KE+PE
Explanation:
A 4kg object has a momentum of 12 kg*m/s, what is the objects velocity?
Answers
12 = 4 x v | ÷ both sides by 4
12 ÷ 4 =v
v= 3 m/s
Help Please!!!!!!!!!!!!!!!!!!
Answers
• A 1200-kg car is driven through town with a speed of
15 m/s.
What is the magnitude of the car's
momentum?
Answers
m = 1200 kg
v = 15 m/s
p = (1200 kg)(15 m/s) = 18,000 kg m/s
If the area of a concrete slap weighing 300n is 400cm2 ,how much pressure can it apply when kept on the ground
Answers
Answer:
7500 N/m²
Explanation:
From the question given above, the following data were obtained:
Force (F) = 300 N
Area (A) = 400 cm²
Pressure (P) =?
Next, we shall convert 400 cm² to m². This can be obtained as follow:
1×10⁴ cm² = 1 m²
Therefore,
400 cm² = 400 cm² × 1 m² / 1×10⁴ cm²
400 cm² = 0.04 m²
Finally, we shall determine the pressure. This can be obtained as follow:
Force (F) = 300 N
Area (A) = 0.04 m²
Pressure (P) =?
P = F/A
P = 300 / 0.04
P = 7500 N/m²
An airplane is cruising at a speed of 250 m/s. If the airplanes engines provide a forward force of 19,540 N, calculate the force of the air resistance (friction) that is acting on the plane.
Answers
Two football players with mass 75 kg and 100 kg run directly toward
each other(this means they are running in the opposite directions).
The 75 kg player has a speed of 6m/s to the right and the 100 kg
player has a speed of 8 m/s to the left. What is the momentum of
the 75 kg player?
Answers
Answer:
A. 2 m/s
(m x v) (m x v) = (m+m)v
The offspring resulting from sexual reproduction are exactly like their parents.
false
true
Answers
Answer:
false
Explanation:
As both parents contribute half of the new organism's genetic material, the offspring will have traits of both parents, but will not be exactly like either parent
Answer:
False
Explanation:
The only time you end up like your parent is asexual reproduction
3. Jeremy has a solution with a mass of 228 g. He knows that the mass of the solvent was 224 g. How much is the mass of the solute in the solution?
Answers
there is 4g of solute in the solution.
8. List the objects in order from least to greatest inertia
A
B
D
5 kg
4 kg
3 kg
10 kg
a = 1 m/s/s
a 3 m/s/s
a 2 miss
a= 0 m/s/s
Answers
Answer:
mhibyguftyftfrehlknmjhbn
Explanation:
njhvvtfryvbnyuhnuihnjhk
What’s your pets name if you have one if not what’s a pet that you do want for brainliest :]
Answers
Answer:
I do have a pet
Explanation:
his name is shadow and he's a cat
True or false the weak force also called the weak nuclear interaction is by far the weakest of the four fundamental forces
Answers
Answer:
True
Explanation:
There basically four type of forces in nature that govern the entire laws of nature. These four forces are
1.Gravity.
2.The weak force.
3.Electromagnetism.
4.The strong force.
The weak force as it is called is the weakest of the all the forces mentioned above. It is also called weak nuclear interaction force and is responsible for particle decay.
William drew a diagram of a box containing a gas for his science project. His drawing is shown.
Answers
HELP!!! I MIGHT FAIL THE 6th GRADE IF I DON'T GET HELP!!!! The southern United States experiences periodic occurrences of severe cold and drought conditions. Which weather phenomenon most likely causes this and why?
Answers
Answer:
La Niña, because the jet stream is displaced northwards
Explanation:
La Nina is known to be a cool phase that affects the average ocean temperature. During this period the surface wind becomes stronger and there is lesser rainfall over the areas of the central tropical Pacific to which the Southern United States belongs.
Hence, when the southern United States experiences periodic occurrences of severe cold and drought conditions, the weather phenomenon most likely causes this and why is "La Niña, because the jet stream is displaced northwards."
Which argument best explains the charge of an atomic nucleus? *
1 point
An atomic nucleus is positively charged because it is composed of neutrons.
An atomic nucleus is positively charged because it is composed of protons.
An atomic nucleus is negatively charged because it is composed of electrons.
An atomic nucleus is negatively charged because it is composed of neutrons.
Answers
Answer:
An atomic nucleus is positively charged because it is composed of protons
Explanation:
Protons carry positive charge and nucleus only contain protons