Answer:
Force = 3.204Newton
Explanation:
Given the following data;
Pressure = 178
Area = 18 mm² to meter = 18/1000 = 0.018 m²
To find the force;
Force = pressure * area
Force = 178 * 0.018
Force = 3.204 Newton.
name one property you know about LIGHT. Explain.
Answer:
The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization, while its speed in a vacuum, 299 792 458 m/s, is one of the fundamental constants of nature.
Explanation:
Light is made of particles called photons, bundles of the electromagnetic field that carry a specific amount of energy. With sufficiently sensitive experiments, you can count photons or even perform measurements on a single one. Researchers have even frozen light temporarily.
Hope this Helps :)
How much net force is acting on a 50 kg falling object that has reached terminal velocity?
0 N
50 N
100 N
500 N
Answer:
Net force would be zero
Explanation:
It's still receiving a gravitational force of almost 500 Newtons downward, but because it has reached terminal velocity, that means it's also receiving an opposite and roughly equal force due to friction with the air. The two balance out for a total of zero.
Answer:
0 N
Explanation:
what is the average speed of an athlete who runs 1500m in 4minuites
Answer:
375m per minute
Explanation:
Just divide 1,500 by 4 and you will get your answer!
Answer:
375 meters per minute
Explanation:
it is that much
A roller coaster is released from the top of a track that is 125 m high. Find the rollar coaster speed when it reaches ground level.
Explanation:
A roller coaster is released from the top of a track that is 125 m high. Find the roller coaster speed when it reaches ground level. 75. A 1500 kg car, moving at a speed of 20 m/s comes to a halt. How much work was done .
HOPE IT HELPSmark me in brainliest answers please please pleaseThe roller coaster speed when it reaches to ground level is 15.65 m/sec
Given-
Roller coaster is released at a height of 125 meters.
It is known that, square of the final velocity [tex]v[/tex] of the body is equal to the sum of the square of initial velocity [tex]v_{10}[/tex] and the product of the twice of acceleration [tex]a[/tex] and displacement [tex]d[/tex]. It can be written as,
[tex]v^{2} =v_{0}^2+2ad[/tex]
Roller coaster released from rest therefore initial velocity is zero.
[tex]v^{2} =0+2ad[/tex]
[tex]v^{2} =2ad[/tex]
Roller coaster will fall towards the ground with an acceleration equal to gravity g and height of 125 m. therefore,
[tex]v^{2} =2\times g\times 125[/tex]
[tex]v^{2} =2\times 9.8\times 125[/tex]
[tex]v^{2} =2450[/tex]
[tex]v=15.65[/tex]
Hence, the roller coaster speed when it reaches to ground level is 15.65 m/sec.
For more about the velocity, follow the link below-
https://brainly.com/question/862972
2. A ball is dropped from rest. The acceleration due to gravity is 10m/s? and the time it
takes for the ball to reach the ground is 5 seconds. What was the velocity of the ball just
before it hits the ground
Answer:
STEP BY STEP
V = S/T
V= 10/5
V = 2 m/s
How does a computer process data? *
A.Computer processes combinations of 1s (on) and Os (off) as a form a code and
translates it into data.
B.Computer processes combinations of base 10 numbers using different amounts of
voltage and translates it into data
C.Computer processes number of lights on to tally and translates it into data
D. All of the above
The correct answer D: all of the above
He likes to eat (into passive voice)
Answer:
yes he does
Explanation:
an elevator provides 21 000 w of power during a 12 s ride. how much work does the elevator do?
Answer:
252000 J
Explanation:
W = Pt
W = (21000 w)(12 s)
W =252000 J
Why does it take 2 days longer for the Moon to go from New Moon to New Moon when viewed form the Earth than it takes for the the moon to make 1 complete rotation on its axis?
The time between two new Moon phases or two full Moon phases is 29.5 days. ... The difference of 29.5 and 27.3 is that while the Moon is orbiting the Earth, the Earth is moving along in its orbit so it takes longer for the Moon to reach the same position relative to the Sun.
Motion is
displacement
an object you look at to determine if something is moving
a change of position in relation to another object
speed
Answer:
a change of position in relation to another object.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
Hence, motion is a change of position in relation to another object.
Please help?? PWEASE PWEASE PWEASE
Describe how you would draw a diagram that shows the electric field between two particles that attract each other.
Answer:
draw the two atomic structures and then focus in on the electrons either gaining or losing and draw them with arrows and dots
Explanation:
A 8.73-g bullet is moving horizontally with a velocity of 345 m/s, where the sign indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. The bullet passes completely through the first block (an inelastic collision) and embeds itself in the second one, as indicated in part b. Note that both blocks are moving after the collision with the bullet. The mass of the first block is 1201 g, and its velocity is 0.714 m/s after the bullet passes through it. The mass of the second block is 1606 g. (a) What is the velocity of the second block after the bullet imbeds itself
Answer:
v₃ = 1.334 m/s
Explanation:
This problem can be solved using the law of conservation of momentum:
[tex]m_{1}u_{1} + m_{2}u_{2} + m_{3}u_{3} = m_{1}v_{1} + m_{2}v_{2} + m_{3}v_{3}\\[/tex]
m₁ = mass of bullet = 8.73 g = 0.00873 kg
m₂ = mass of first block = 1201 g = 1.201 kg
m₃ = mass of second block = 1606 g = 1.606 kg
u₁ = initial speed of bullet = 345 m/s
u₂ = initial speed of first block = 0 m/s
u₃ = initial speed of second block = 0 m/s
v₁ = final speed of bullet = v₃ (since the bullet is embedded in second block)
v₂ = final speed of first block = 0.714 m/s
v₃ = final speed of second block = ?
Therefore,
[tex](0.00873\ kg)(345\ m/s)+(1.201\ kg)(0\ m/s)+(1.606\ kg)(0\ m/s)=(0.00873\ kg)(v_{3})+(1.201\ kg)(0.714\ m/s)+(1.606\ kg)(v_{3})[/tex]
[tex]3.0118\ kg.m/s - 0.8575\ kg.m/s = (1.6147\ kg)(v_{3})\\\\v_{3} = \frac{2.1543\ kg.m/s}{1.6147\ kg} \\[/tex]
v₃ = 1.334 m/s
Motion is
displacement
an object you look at to determine if something is moving
a change of position in relation to another object
speed
Answer:
a change of position in relation to another object.
Explanation:
Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point.
This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.
A reference point refers to a location or physical object from which the motion (movement) of another physical object or body can be determined.
Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.
Hence, motion is a change of position in relation to another object.
Gravity always acts towards the center of the earth. TRUE OR FALSE?
Answer:
On Earth, gravity pulls all objects to Earth's center. The Law of Universal Gravitation states that all objects in the universe attract each other, therefore gravity acts on all objects in the universe. Although gravity affects all things, the attraction between two objects depends on a few things.
Explanation:
Answer:
T
Explanation:
The Earth is one massive object whose gravitational force is very strong. Thus gravity of Earth attracts all objects towards the centre of Earth.
An object is in front of a converging lens of f = 15 cm, what is the distance of the object if you know that the distance of the image is 20 cm ?
Answer:
ikn
Explanation:
Answer:
the distance is 15+20=35 cm
What are the energy transformations that occur during a roller coaster ride? 1 paragraph
Answer:
The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy. Roller coasters rely on gravity to take them to the end of the track. This involves two types of energy, potential energy and kinetic energy.
Explanation: my mom told me lol ..
Answer:
The movement of a roller coaster is accomplished by the conversion of potential energy to kinetic energy. The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy.
Explanation:
That's gonna help right?
A 1500 kg car accelerates at 3 m/s^2. What is the net force acting on the car?
Answer:
4500N
Explanation:
Force =mass into acceleration
So 1500 into 3 you will get 4500
A light beam with a 70° angle of incidence travels through a medium with an index of refraction of 1.8. The light enters a second medium and has an angle of refraction of 37°. What is the index of refraction of the second medium?
Answer:
Explanation:
For refraction , the formula is
sin i / sin r = μ₂ / μ₁
where light is travelling from medium 1 to 2 having refractive index of μ₁ and μ₂ . Angle of incidence in medium 1 is i and angle of refraction in medium 2 is r .
Here i = 70°, r = 37°
μ₁ = 1.8 ,μ₂ = ?
sin70 / sin 37 = μ₂ / 1.8
.939 / .602 = μ₂ / 1.8
1.56 = μ₂ / 1.8
μ₂ = 2.81 .
The value of refraction index for the second medium will be [tex]\mu_2=2.16[/tex]
What will be the refractive index?Every material has a different refractive index. The refracted index of any material shows that the light is refracted by how much angle.
So like for water its value will be different also for glass its value will be different.
Now it is given in the question that
Angle of incidence [tex]i=70^o[/tex]
Refractive index of the first medium [tex]\mu_1=1.8[/tex]
Angle of refraction [tex]r=37^o[/tex]
Now from snells law
[tex]\dfrac{Sin \ i}{Sin \ r} = \dfrac{\mu_2}{\mu_1}[/tex]
[tex]\dfrac{Sin70}{Sin37} = \dfrac{\mu_2}{1.8}[/tex]
[tex]\mu_2= \dfrac{Sin70\times1.8}{Sin37}[/tex]
[tex]\mu_2=2.16[/tex]
Thus the value of the refraction index for the second medium will be [tex]\mu_2=2.16[/tex]
To know more about the Refractive index follow
https://brainly.com/question/10729741
When a warm air mass collides with a cold air mass, the warm air mass rises above the cold air mass leading too:
A) Sunny skies
B) Global warming
C) The formation of clouds and rain
D) Volcanic eruptions
Answer: It leads to a front. A front is.., I don't know how to explain it, so I'll add a picture. Fronts are made out of clouds and usually bring rain. So the answer is C: The formation of clouds and rain.
Explanation:
If a 5 kg cart is pulled with a net force of 20 Newtons. What is the magnitude, in m/s2, of the acceleration?
Answer:
F=ma
a=F/m=20/5=4 m/s^2
Please help me lol :|
Answer:
1 is community 2 habitat 4 producer 5 consumer 6 food chain 7 predator 8 prey sorry I don't know 4
The diagram does not represent a real electric field because the field lines__
NEED ANSWERS NOW
Answer:
cross at many points
Explanation:
According to the diagram it does not shows the real electric field as the electric field does not intersect with each other but according to the given diagram many lines are intersected with each other
So the correct option is C as it would be crossed at many points
Hence, the same would be relevant
3.The space heater in a room does not have a fan, but after a few minutes you feel warm air moving by you. What type of energy transfer?
Which region on the map has the highest risk of future landslides?
Answer:
Reigon 1
Explanation:
It has the higest rate of landslides currently
Which of the following is an uncontrollable risk factor for myocardial infarction?
weight gain
age
poor diet
cigarette smoking
How much electricity is used to boil 600 g of water if the kettle has a power of 1500 W? The water boiled for 3 minutes and 9 seconds. Water density is 1000 kg/m3, specific heat of water is 4200 J/(kg· oC).
Answer:
The electrical energy consumed in boiling the water is 0.0788 kWh
Explanation:
Given;
mass of the water, m = 600 g = 0.6 kg
power rating of the kettle, P = 1500 W = 1.5 kW
specific heat capacity of water, c = 4,200 J/kg⁰C
density of water, = 1000 kg/m³
time taken to boil the water, t = 3 mins + 9 s = (3 x 60s) + 9 s = 180 s + 9 s = 189 s = [tex]189 \ s \times \frac{1 hr}{3.600 \ s} = 0.0525 \ hr[/tex]
The electrical energy consumed in boiling the water is calculated as;
E = P x t
E = 1.5 kW x 0.0525 hr
E = 0.0788 kWh
Therefore, the electrical energy consumed in boiling the water is 0.0788 kWh
A gold bar contains 63.0 mol of gold, Au(s). How many atoms of gold are in the bar?
Answer:
63.0 x (6.02 x 10^23) = 3.79 x 10^25 atoms of gold
Explanation:
There are 6.02 x 10^23 representative particles in a mole of any substance. Multiply it by the number of moles, and you will get the number of representative particles (atoms, molecules, formula units)
Conservation of momentum
Answer:
The combined velocity of Sally and the sled is 1.688 meters per second.
Explanation:
Let suppose that Sally collides inelasticly, meaning that final velocity of Sally-sled system can be determined solely by Principle of Momentum Conservation:
[tex]m_{S}\cdot v_{S, o} + m_{s}\cdot v_{s,o} = (m_{S}+m_{s})\cdot v[/tex] (1)
Where:
[tex]m_{S}[/tex] - Mass of Sally, measured in kilograms.
[tex]m_{s}[/tex] - Mass of the sled, measured in kilograms.
[tex]v_{S,o}[/tex] - Initial velocity of Sally, measured in meters per second.
[tex]v_{s,o}[/tex] - Initial velocity of the sled, measured in meters per second.
[tex]v[/tex] - Final velocity of the Sally-sled system, measured in meters per second.
If we know that [tex]m_{S} = 54\,kg[/tex], [tex]m_{s} = 10\,kg[/tex], [tex]v_{S,o} = 2\,\frac{m}{s}[/tex] and [tex]v_{s,o} = 0\,\frac{m}{s}[/tex], then the final velocity of the system is:
[tex]v = \frac{m_{S}\cdot v_{S,o}+m_{s}\cdot v_{s,o}}{m_{S}+m_{s}}[/tex]
[tex]v = 1.688\,\frac{m}{s}[/tex]
The combined velocity of Sally and the sled is 1.688 meters per second.
Temperature and kinetic energy have a________
relationship.
help pls help help help
Answer:
do u still need the answer it has been 2 weeks ?
Explanation: