Answer:
[tex]s_2=-806m[/tex]
Explanation:
From the question we are told that
Velocity 1 [tex]v=1.34m/s \angle west[/tex]
Distance [tex]d=6.44km=>6440m[/tex]
Velocity 2 [tex]v_3=2.68m/s[/tex]
Velocity 3 [tex]v_3=0.447m/s \angle east[/tex]
Generally the equation for VT is mathematically given by
[tex]VT=v_1t_1 +V_2t_2[/tex]
[tex]VT=2.68(2400)-0.447t_2[/tex]
[tex]1.34t_1+1.34t_2=2.68(2400)-0.447t_2[/tex]
[tex]t_2=1804s[/tex]
Therefore
[tex]s_2=v_2t_2=(-0.447)(1804)[/tex]
[tex]s_2=-806m[/tex]
12. In which of the positions shown in the picture, will Joshua have both potential and kinetic energy?
Answer:
Answer: D. Only R
Explanation:
The Principle Of Conservation Of Mechanical Energy
In the absence of friction, the total mechanical energy is conserved. That means that
Em=U+K is constant, being U the potential energy and K the kinetic energy.
At the top of the path (point Q), Joshua is at rest but his height is at a maximum. Thus his kinetic energy is zero.
At point P, Joshua is at the minimum level (potential energy zero) and his speed is at a maximum.
At point R, Joshua has some height and some speed which means he has both types of energy.
Answer: D. Only R
The net force acting on this object is 200N to the left. What is the force of friction and air resistance combined if the thrust force is 500N?
Answer:
Explanation:
Force of friction and air resistance acts against the external force . Let it be f .
net force = external force - frictional force and air resistance
Putting the given values
200 = 500 - f
f = 500 - 200 = 300 N .
Hence force of friction = 300 N .
A stone is thrown upwards from the edge of a cliff with a speed of 5.0 ms. It hits the
ground 2.0 s later. What is the height of the cliff?
If you can provide some explanation I will greatly appreciate it.
Answer:
3.0 would be it
Explanation:
Because if you think bout it the 5.0 negative 2.0 is 3.0
What is the net force on a 116 kg woman free falling at 97 m/s who has reached terminal velocity.
Whoever could answer this I would make Brainliest
Answer:
1. the rocks at the bottom of the aquarium
2.the fish and maybe the plants (if you use live plants)
3. fish interact with there no living things like how one would hide in the grass or something like that.
4. decorations (like a cave or fake house, tho the aquarium its self is a home)
5.they would die, and rot.
Explanation:
rocks are nonliving
fish are living things and so are plants
fish can hide in the plants
the fish can "live" in the decorations, but the aquarium itself is its home.
if something reaches the end of its life span it dies.
Whats is the resistance of a bulb with a current of 60a in a circuit with a 12v battery
Answer:
60a in a circuit with a 12v battery
Explanation:
60a in a circuit with a 12v battery
PLEASE HELP WITH THIS!
Answer: A
Explanation:
Parallel circuit. The source current is three times the current of a single bulb
fill in the blanks (about force)
depends on _____ and _____
. Work done by a force depends upon force applied and displacement produced.
A(n) _____ represents the U.S. in a foreign country.
A. attorney general
B. ambassador
C. secretary
D. embassy
Answer:
B(Ambassador)
Explanation:
The president appoints ambassadors to foreign countries to represent the United States.
Example of kinetic to thermal? And explain how the energy is changing forms? Please help
Answer:
Indeed
Explanation:
Answer:
A roller coaster that is running heating up the rails
Explanation:
the enery is changing forms due to friction and cunduction
What does AS>0 mean?|
I
Answer:
Significant Other
Explanation:
that comes to mind when I see that
ANSWER ASAP Which factor determines the amount of gas that can dissolve in ocean water? (A) the motion of the air above the ocean water (B) the temperature of the air above the ocean water (C) the motion of the ocean water currents D the temperature of the ocean water
Answer:
The amount of each gas that can dissolve in the ocean depends on the solubility and saturation of the gas in water. Solubility refers to the amount of a dissolved gas that the water can hold under a particular set of conditions, which are usually defined as 0o C and 1 atmosphere of pressure.
Explanation:
hope this helps
Answer: the motion of the air above the ocean water
Explanation:
HELP NEEDED ASAP GIVING BRAINLIEST!!
View the video clip below and answer the question.
The video clip above illustrates the process of __________
Exploding planet or astroifd
1. If two objects each with the mass of 2.0 x 10^2 kg, produce gravitational force between
them of 3.7 x 10^-6N , What is the distance between them ?
Answer:
r = 0.849 m
Explanation:
Given that,
The masses of two objects, [tex]m_1=m_2=2\times 10^2\ kg[/tex]
The force between the objects, [tex]F=3.7\times 10^{-6}\ N[/tex]
We need to find the distance between the masses. The force between two objects is given by the relation as follows :
[tex]F=G\dfrac{m_1m_2}{r^2}[/tex]
r is the distance between them
[tex]r=\sqrt{\dfrac{Gm_1m_2}{F}} \\\\r=\sqrt{\dfrac{6.67\times 10^{-11}\times (2\times 10^2)^2}{3.7\times 10^{-6}}} \\\\r=0.849\ m[/tex]
So, the distance between them is 0.849 m.
what is the magnitude of velocity for a 1500 kg car possessing 4500 kgm/s of momentum?
What is the net force on this box?
100 N
80 N
90 N
1
100 N
Answer:
10 N to the right
and the up and down is 0 N
i hope it can help
The rebounder in basketball has a vertical leap (that is, the vertical movement of a fixed point on their body) of 106 cm .
Answer:
[tex]u = 4.56m/s[/tex]
[tex]T = 0.94s[/tex]
Explanation:
See comment for complete question
Given
[tex]h = 106cm[/tex] --- Height
Solving (a): The initial speed
To do this, we make use of the third equation of motion
[tex]v^2=u^2+2ah[/tex]
In this case:
[tex]v = 0m/s[/tex] --- final velocity at the maximum height
[tex]a = -g = -9.8m/s^2[/tex]
[tex]h = 106cm[/tex]
Convert height to metres
[tex]h = 1.06m[/tex]
Substitute these values in [tex]v^2=u^2+2ah[/tex]
[tex]0^2 = u^2 +2 *(-9.8) * 1.06[/tex]
[tex]0^2 = u^2 -20.776[/tex]
Collect Like Terms
[tex]u^2 =20.776[/tex]
Take the positive square root of both sides
[tex]u =\sqrt{20.776[/tex]
[tex]u = 4.55806976691[/tex]
[tex]u = 4.56m/s[/tex] --- approximated
Hence, the initial velocity is 4.56m/s
Solving (b): Time spent in the air.
This will be solved using the first equation of motion.
[tex]v = u + at[/tex]
Where:
[tex]v = 0m/s[/tex] --- final velocity at the maximum height
[tex]a = -g = -9.8m/s^2[/tex]
[tex]u = 4.56m/s[/tex]
So, we have:
[tex]0 = 4.56 - 9.8t[/tex]
Collect Like Terms
[tex]9.8t = 4.56[/tex]
Make t the subject
[tex]t = \frac{4.56}{9.8}[/tex]
[tex]t = 0.46530612244[/tex]
[tex]t = 0.47s[/tex] --- approximated
The above is the time it reaches the maximum height.
The time it stays in the air is:
[tex]T = 2t[/tex]
This gives:
[tex]T = 2*0.47s[/tex]
[tex]T = 0.94s[/tex]
On the way home from school, you notice the speedometer on the car is at 5,200 miles. When you get home, the speedometer reads 5,208 miles. With only this information what value could you calculate?
O Velocity
O Displacement
O Acceleration
O Distance
Answer:
O Distance
Explanation:
With the given information, it is possible to find the distance of the car has traveled on the home from school.
This is possible because distance is the length of path a body covers.
From the given values:
Distance = 5208 - 5200 = 8miles
It is not possible to find the displacement because no direction was given.
Also velocity is not possible since the time frame of travel was not state.
A motorcycle cop, parked at the side of a highway reading a magazine, is passed by a woman in a red Ferrari 308 GTS doing 120.0 km/h. After a few attempts to get his cycle started, the officer roars off 2.00 s later. At what average rate must he accelerate if 159 km/h is his top speed and he is to catch her just at the state line 3.04 km away?
Answer:
XZXDHF
Explanation:ZDHF
Who may perform a post-exposure medical evaluation?
A) A licensed physician
B) An LPN
C) A physician's assistant
D) Your employer
Answer:a licensed physician
Explanation: taking the osha test now.
A licensed physician is the one to carry out a post-exposure medical evaluation. (Option A)
Post-Exposure Medical EvaluationPost-exposure Medical Evaluation is any medical evaluation started after exposure to a pathogen in order to prevent the infection from occurring.
Read more on Post-Exposure Medical Evaluation:
https://brainly.com/question/2910834
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pllllllllllllllllllssssssssss help me will give brainiest if correct
Answer:
I believe it is the same as before-Electrical energy is transformed into heat and light energy.
Explanation:
Hope this helps'-'
Chemical energy (in his muscles) ===> kinetic energy ===> electrical energy ===> light energy and a little bit of heat energy
What is the mass, in grams, of 2.00 moles of H2O?
Answer:
36g
Explanation:
Given parameters:
Number of moles of H₂O = 2moles
Unknown:
Mass of H₂O = ?
Solution:
To solve this problem, use the expression below:
Mass of H₂O = number of moles x molar mass
Molar mass of H₂O = 2(1) + 16 = 18g/mol
Mass of H₂O = 2 x 18 = 36g
True or False? Convection in the inner core causes the solid layers like the lithosphere to move and cause earthquakes
Answer:
True
Explanation:
Hope it help
Mark me as brainliest
Answer:
True
Explanation:
!mark me as brainliest
If an 80 kg swimmer pushes off a pool wall with a force of 250 N, what is her
acceleration?
Answer:
Explanation:
Force = Mass*Acceleration
Remember this formula because its one of the most used formula in all of physics.
250N = 80kg*Acceleration
a = 3.125 m/s^2
There would definitely be friction because of the water, but since this says high school physics, you prolly can assume it to be negligible
What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?
Which circuit element controls the flow of current?
Answer:
REGULATOR
Explanation:
2) If you have a saran wrap that has a neutral charge how many excess electrons does it have?
Zero, neutral means no extra electrons.
13. Harry used the energy stored in his muscles to cycle up a hill. What happened to this energy when he reached the top?
A. The energy stored in Harry's musclesbwas destroyed.
B. The energy was returned to Harry's muscles
C. Kinetic energy changed to potential energy.
D. Potential energy changed to kinetic energy.
Answer:
C. Kinetic energy changed to potential energy.
Explanation:
The kinetic energy is converted to potential energy when he reaches the top of the hill.
As with every system, energy is neither created nor destroyed but transformed from one form to another.
This is from the law of conservation of energy.
Kinetic energy is produced when Harry moves the up the hill. As he reaches the top of the hill and comes to rest, potential energy is formed.
Potential energy is the energy due to the position of a body.
HOW MANY SIGNIFICANT FIGURES ARE THERE IN THE NUMBER 405,000?
Answer:
Three, but see below.
Explanation:
You can be certain of three, but that may not be true at all. The only way to know for certain is to put it into scientific notation.
4.05 * 10^5 would be three, but other answers are possible. For example
4.050 * 10^5 would have 4.
An object accelerates at 8 m/s^2 when a force of 40 Newtons is
applied to it. What is the mass of the object? (Use formula: m=Fla)
Answer:
5 kg
Explanation:
Acceleration = 8 m/s^2
Force = 40 N
Force = mass * acceleration
mass = force / acceleration
mass = 40 / 8
mass = 5 kg