Sudhir walks 0.40 km in a direction 60.0° west of north, then goes 0.50 km due west. What is his displacement?
Answers
Answer:
The displacement of Sudhir is 0.781 km.
Explanation:
Given;
initial distance, d₁ = 0.4 km = 400 m, N60.0°W
final distance, d₂ = 0.5 km
Make a sketch of Sudhir motion to form a right angled triangle;
(Check image uploaded).
Apply cosine rule to determine d "displacement"
d² = 500² + 400² - (2 x 500 x 400 x cos 120)
d² = 410,000 - (400,000 x -0.5)
d² = 410,000 - (-200,000)
d² = 410,000 + 200,000
d² = 610,000
d = √610000
d = 781.03 m
d = 0.781 km
Therefore, the displacement of Sudhir is 0.781 km.
Related Questions
The table shows information about four objects resting at the top of a hill.
A 3-column table with 4 rows titled Four Objects at Rest on a Hill. The first column labeled Object has entries W, X, Y, Z. The second column labeled Mass (kilograms) has entries 50, 35, 62, 24. The third column labeled Potential Energy (Joules) has entries 980, 1029, 1519, 1176.
Which object is on the tallest hill?
W
X
Y
Z
Answers
It's Z your welcome :)
Answer:
It is Z i believe.
Explanation:
Potential Energy = mass x gravity x height
W: 980 = (50)(9.8)(h)
X: 1029 = (35)(9.8)(h)
Y: 1519 = (62)(9.8)(h)
Z: 1176 = (24)(9.8)(h)
simplify:
W: 980 = 490h
X: 1029 = 343h
Y: 1519 = 607.6h
Z: 1176 = 235.2h
Divide from both sides of each equation:
W: (980/490) = h
X: (1029/343) = h
Y: (1519/607.6) = h
Z: (1176/235.2) = h
Simplify the left side:
W: 2 = h
X: 3 = h
Y: 2.5 = h
Z: 5=h
Which type of matter is gold an element used in making jewelry A.) A heterogeneous mixture B.) A pure substance C.) A crystalline compound D.) A homogeneous mixture
Answers
Answer:
A
Explanation:
The gold used in the making of jewelry is usually not pure but a heterogeneous mixture of metals. Pure gold is quite soft and even though it may look better in appearance compared to those made using heterogeneous mixtures, it usually bends easily. Hence, in order to make the jewelry more durable, gold is usually mixed with other metals to form a heterogeneous mixture.
The correct option is A.
The north pole of one bar magnet is near the south pole of another bar
magnet. What happens to the magnets?
A. They twist away from each other.
B. They repel each other
C. They attract each other.
D. They neither attract nor repel each other.
Answers
Answer:
I think it could be C.
hope it helps!
FOR A liquid drop of radius r falling in air with terminal velocity, power delivered by gravitational force is propotional to
Answers
Answer:
P = m g v
Explanation:
Power is defined as the relationship between work and time
P = W / t
The work is defined by the scalar product of the force and the displacement, in the case of a drop falling the vertical force and the displacement has the same direction, therefore the angle between them is zero and the cosines of zero is one (cos 0 = 1)
W = F y
the gravitational force is proportional to the weight of the drop (F = mg)
W = mg y
we substitute
P = m g y / t
the terminal velocity of the drop is constant
P = m g v
A swing held up by someone at one side has the potential to swing when released.
True
False
Answers
Explain what happens as an object moves through each phase of matter.
ASAP PLEASE ????????
Answers
Explanation:
gas vibrate and move freely at high speeds, liquid vibrate, move about and slide past each other. solid vibrate (jiggle) but generally do not move from place to place
If you could change one rule in soccer, what would it be and why?
Answers
A carbon fiber car bumper is hit by another car with the stress of 106,483 Pa. If carbon fiber has a Young's modulus of 228 x 109 Pa, what is the amount of strain it will experience?
Answers
Answer:
Stress = 4.67 * 10^-7 N/m²
Explanation:
Young's modulus of the material = Stress/Strain
Given
Young's modulus = 228 x 10^9 Pa
Stress = 106,483 Pa
Required
Strain
From the formula;
Strain = Stress/Young modulus
Strain = 106,483 /228 x 10^9
Stress = 4.67 * 10^-7 N/m²
Help me with this question please
Answers
Answer:
the answer is A, 9.5 units
Find the number of moles and the number of molecules in one cubic meter of air at 1 atmospheric pressure and 0C.
Answers
Answer:
The number of moles of the air is 4.464 x 10⁻⁴ mole
The number of molecules is 2.688 x 10²⁰ molecules
Explanation:
Given;
pressure of the air, P = 1 atm
volume of the air, V = 1 m³
temperature of the air, T = 0° C = 273 K
The number of moles of the air is calculated as;
PV = nRT
[tex]n = \frac{PV}{RT}[/tex]
where;
n is the number of moles
R is ideal gas constant = 8.2057m³atm/mol.k
[tex]n = \frac{1atm \ \times \ 1m^3}{(8.2057 \ m^3 atm/mol.K)(273 \ K)} = 4.464 \ \times 10^{-4} \ mol.[/tex]
The number of molecules is calculated as follows;
1 mole ---------------------> 6.022 x 10²³ molecules
4.464 x 10⁻⁴ mole ----------> ?
= (4.464 x 10⁻⁴) (6.022 x 10²³ molecules)
= 2.688 x 10²⁰ molecules of air.
elements X and Y have atomic number of 11 and 17 respectively. Which one of the elements is a metal?
Answers
Answer:
atomic 11
Explanation:
atomic 11 Na is metal
help pls i need this right now
Answers
Answer:
0i,63.5j. Just see i as x and j as y
which weather change usually occurs when the difference between the air temperature and the dewpoint temperature is decreasing
Answers
Answer:
relative humidity increases
Explanation:
hope this helps:)
If we double the distance between two point charges then coulombs force will
Answers
Answer: The size of the force varies inversely as the distance square between the two charges. Thus, if the distance between the two charges is doubled, the attraction or repulsion will become weaker and decrease to one-fourth of the original value. The size of the force shall be proportional to the value of each charge.
Explanation:
Hope This Helps!!! : )
Keep Smiling Have A Good Day/Night!!! : )
Certain family dynamics, such as abusive parenting, can increase the susceptibility of someone developing a(n) __________ disorder.
Answers
Answer:
personality disorder
Explanation:
Certain family dynamics, such as abusive parenting, can increase the susceptibility of someone developing a(n) personality disorder.
How does a person with personality disorder behave?
A disorder is diagnosed when these personality traits are significantly “deviated” from others and are very inflexible, impairing a person's adaptation to everyday situations and causing distress and discomfort in their personal relationships and other areas of life.
Personality disorders are generally pervasive and persistent patterns of thinking, perceiving, reacting, and relating that cause significant distress or functional impairment.
See more about personality disorders at brainly.com/question/27291111
which describes what a velocity/ time graph looks like with no acceleration?
Answers
Answer:
A straight line with no slope.
Answer:
C on edge 2021
Explanation:
A box is 30cm wide 40cm long and 25cm high calculate area boa
Answers
Answer:
SA = 5900 sqcm
Explanation:
I am assuming you meant surface area since this is a three dimensional box. This formula for surface area (SA) is SA = 2 (wl + hl + hw). Once you have that would just have to plug the numbers in and calculate!
Record the mass for each dialysis tube: A B 0% C 5% D 10% E 15% Mass (before): Mass (after): Difference:
Answers
Answer:
hey dont mind me just need points
Explanation:
Alan and Monica tested how fertilizer X affected the growth of a plant. Alan and Monica put 100 grams of fertilizer X in pot 1. They put 0 grams of fertilizer X in pot 2.
What is pot 2 called in science?
A.
a test group
B.
a data group
C.
an observational group
D.
a control group
Answers
Answer:
D.
a control group
Explanation:
In a scientific experiment such as the one above, there is an experimental group and a control group. The experimental group is the group that receives the treatment while the control group does not receive any treatment. The control group helps the researcher to observe if the treatment had any significant effect.
In this case, it will help Alan and Monica to determine if fertilizer X actually had an effect on the plant. Therefore, the pot with o grams of fertilizer in it is the control group.
just want a ride with
Answers
Answer:
My best friend lol cuz since quarantine i didn't see her
Cindy pours cool milk into a hot bowl of oatmeal and then stirs it with a room-temperature spoon. Which substance will have heat flow from it to the other substances?
the milk
the spoon
the oatmeal
the surrounding air
Answers
Answer:
The OatMeal
Explanation:
Answer:
C.) The Oatmeal
Since the oatmeal is the hottest it will spread the other substances which will increase the temperature of the milk, spoon, and the surrounding air.
The oatmeal had the most thermal energy out of the four options; the milk was cool, the spoon was at room temperature and the surrounding air was also at room temperature. Therefore, the heat from the oatmeal will travel to those substances and change their thermal energy.
Explanation:
Have a great rest of your day
#TheWizzer
Refresh the simulation, and then add six protons and six electrons to make a neutral carbon atom. the Mass Number window. What's the mass number of this carbon atom?
Answers
Answer:
The mass number of this carbon atom is 12.
Explanation:
Mass number = Number of protons + Number of neutrons = 6 + 6 = 12
Brainlist pls!
Answer:
6
Explanation:
What would be the net force on an object if the object's acceleration is 0?
Answers
Answer:
Explain. yes it is possible because when the net force is zero and acceleration is zero. ... no, Neglecting air friction, the only force acting on this object is the force of gravity downward. There is no force of equal magnitude as the force of gravity acting in the opposite direction.
The owner of a window-treatment company wants to design shades that will cover the windows of a house. The shades should also warm the house by maximizing the absorption of solar energy coming through the windows.
Which kind of material would best accomplish this task?
black and textured
black and smooth
white and textured
white and smooth
Answers
black and textured is the answer
Answer:
D
Explanation:
If the torque required to loosen a nut on the wheel of a car has a magnitude of 40.0Nm, what minimum force must be exerted by a mechanic at the end of a 30.0cm wrench to loosen the nut
Answers
Explanation:
Minimum force means that the force should be applied at a 90° angle from the wrench.
40.0Nm / (0.30m) = 133.33N.
The mimumum force is 133.33N.
All of the following are kinds of forces except thrust acceleration gravity friction
thrust
acceleration
gravity
friction
Answers
Answer:
Acceleration
Explanation:
The choice from the given option which is not a force is acceleration.
Acceleration is defined as the rate of change of velocity of a body with time;
Acceleration = [tex]\frac{change in velocity}{time}[/tex]
Force is a pull or push on a body. The product of mass and acceleration is force.
Thrust is a form of forceGravity is a force acting on bodies with masses. Friction is a force that opposes motion,is
A 0.155 kg arrow is shot upward
at 31.4 m/s. What is its kinetic
energy (KE) when it is 30.0 m
above the ground?
Answers
Kinetic energy = 29.912 J
Further explanationGiven
mass = 0.155 kg
vo=initial velocity = 31.4 m/s
h/d=30 m
Required
KE=kinetic energy
Solution
vt²=vo²-2ad⇒vt=final velocity
vt²=31.4²-2.10.30⇒g=10 m/s²
vt²=985.96-600
vt²=385.96 m/s
Kinetic energy (KE)
[tex]\tt KE=\dfrac{1}{2}mv^2\\\\KE=\dfrac{1}{2}\times 0.155.\times 385.96\\\\KE=29.912~J[/tex]
Answer:
The answer is 30.8 (J)
Explanation:
You're welcome
Define one joule heat.
Answers
Answer:
The joule is the standard unit of energy in electronics and general scientific applications. One joule is defined as the amount of energy exerted when a force of one newton is applied over a displacement of one meter. One joule is the equivalent of one watt of power radiated or dissipated for one second.
Hope it helps ^^
which is a more scientific way of measuring earthquake? why?
Answers
Answer:Earthquakes are measured using seismographs, which monitor the seismic waves that travel through the Earth after an earthquake strikes. Scientists used the Richter Scale for many years but now largely follow the “moment magnitude scale,” which the U.S. Geological Survey says is a more accurate measure of size.
a pupil adds 37g of ice at 0°C to 100g of water at 30°C. The final temperature of the water and melted ice is 0°C. no heat is lost to, or gained from, the surroundings.
The specific heat capacity of water is 4.2 J/ (g°C)
what is the specific latent heat of ice?
A) 47 J/g c) 4700 J/g
b) 341 J/g d) 12600 J/g
Answers
Answer:
The specific latent heat of ice is approximately 341 J/g
The correct option is;
b) 341 J/g
Explanation:
The given parameters are;
The mass of ice the pupil adds to the water, m₁ = 37 g
The initial temperature of the ice, T₁ = 0°C
The mass of the water to which the ice is added, m₂ = 100 g
The initial temperature of the water, T₂₁ = 30°C
The final temperature of the water and the melted ice, T₂₂ = 0°C
The specific heat capacity of the water, c₂ = 4.2 J/(g·°C)
By the principle of conservation of energy, we have;
The heat gained by the ice = The heat lost by the water = ΔQ₂
Given that the ice is only melted with no change in temperature, we have;
The heat gained by the ice = The latent heat needed for melting the ice
ΔQ₂ = m₂ × c₂ × (T₂₂ - T₂₁) = 100 × 4.2 × (0 - 30) = -12,600 J
The heat gained by the ice = m₁ × [tex]L_f[/tex]
Where;
[tex]L_f[/tex] represents the specific latent heat of fusion of ice;
We have;
12,600 = 37 × [tex]L_f[/tex]
[tex]L_f[/tex] = 12,600/37 = 340.54 J/g ≈ 341 J/g
The specific latent heat of fusion of ice = [tex]L_f[/tex] ≈ 341 J/g.