Answer:
One of the best examples of constructive interference that may be observed in our day to day life is two speakers playing same music while facing each other. At this time, music will appear louder and powerful as compared to music played by single speaker.
Explanation:
Please mark me as Brilliant
A ray diagram is shown.
A flower is an object in front of a convex mirror. A ray parallel to the principal axis reflects away from the focal point. The second ray goes to the mirror toward the focal point and reflects parallel to the principal axis. The reflected rays are continued onto the other side of the mirror as dashed lines. At the intersection of the two dashed lines is a small upright image of the object in front of the focal point.
Which describes the image?
It is virtual and in front of the mirror.
It is virtual and behind the mirror.
It is real and in front of the mirror.
It is real and behind the mirror.
Answer:
B. Its virtual and behind the mirror.
Explanation:
Answer: (B) Virutal, (D) Upright, (E) Smaller.
Explanation:
Edge Physics B
Technician A says that cabin filters are accessible behind the glove compartment. Technician B says that cabin filters are accessible from under the hood. Who is correct? A. Technician B only B. Both Technicians A and B C. Technician A only D. Neither Technician A nor B
Answer:
A
but it depends on the car
Explanation:
did anyone do the, kinetic energy lab report in physics?? plzzz help a girl outttttttt i need answerss????ill give you as much brainlist or points
Answer:
yes
Explanation:
As water rises through the troposphere and cools, it changes from a(n) ————- to a(n) ———— through the process of condensation; when the tiny drops of water come together, they form ————- .
Answer:
GAS, LIQUID, CLOUDS
Explanation:
Water can be in three states: solid, liquid and gas, passing from one to another depending on the pressure and temperature.
In this complementation exercise.
When the water cools down the GAS goes to the LIQUID state, these small drops unite and form the CLOUDS
A cube measures 2.5 cm in height and has a density of 3.0 g/cm³. What is the mass?
Answer: mass: 46.875 g
Explanation:
[tex]density = \frac{mass}{volume}[/tex]
density = 3.0 g/cm^3
volume (lwh are all 2.5 since it is a cube) = 2.5^3 = 15.625
mass = ?
[tex]3 = \frac{mass}{15.625}[/tex]
mass = 3*15.625 = 46.875
what is clinograph and how to read it
Answer:
Explanation:
A climograph is a graphical representation of a location's basic climate. Climographs display data for two variables:
(a) monthly average temperature
(b) monthly average precipitation. These are useful tools to quickly describe a location's climate.
Complete the sentence.
When a force applied at an angle causes an object to move horizontally,
only the
of the force does work.
Answer: horizontal component
Explanation: only force which is parallel to motion does work
A force applied at an angle causes an object to move horizontally only force which is parallel to motion does work.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force.
An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
A force applied at an angle causes an object to move horizontally only force which is parallel to motion does work.
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To construct a non-mechanical water meter, a 0.500-T magnetic field is placed across the supply water pipe to a home and the Hall voltage is recorded.
Required:
a. Find the flow rate through a 3.00-cm-diameter pipe if the Hall voltage is 60.0 mV.
b. What would the Hall voltage be for the same flow rate through a 10.0-cm-diameter pipe with the same field applied?
Answer:
a. 4 m/s b. 0.2 V
Explanation:
a. Find the flow rate through a 3.00-cm-diameter pipe if the Hall voltage is 60.0 mV.
The hall voltage V = vBd where v = flow-rate, B = magnetic field strength = 0.500 T and d = diameter of pipe = 3.00 cm = 0.03 m
Since V = vBd
v = V/Bd given that V = 60.0 mV = 0.060 V, substituting the values of the other variables, we have
v = 0.060 V/(0.500 T × 0.03 m)
v = 0.060 V/(0.015 Tm)
v = 4 m/s
b. What would the Hall voltage be for the same flow rate through a 10.0-cm-diameter pipe with the same field applied?
Since the hall voltage, V = vBd and v = flow-rate = 4 m/s, B = magnetic field strength = 0.500 T and d' = diameter of pipe = 10.0 cm = 0.10 m
Substituting the variables into the equation, we have
V = vBd
V = 4 m/s × 0.500 T × 0.10 m
V = 0.2 V
A 0.55 kg soccer ball is kicked with a force of 15 N for 0.25 seconds. The ball was at rest before the kick. What is the speed of the soccer ball after the kick?
Answer:
Check pdf
Explanation:
convertion of unit 8.28x10^-2ft m
Answer:
yes
Explanation:
no
How many atoms are represented by the formula CaF2? A. Four B. Five C. Two D. Three
Answer:
C?
Explanation:
There's 2 different atoms, Ca and F. Unless it's counting the whole thing... then three? (Ca + 2 F atoms)
what is the difference between mass and weight
Answer:
The mass is essentially "how much stuff" is in an object. ... Weight: There is a gravitational interaction between objects that have mass. If you consider an object interacting with the Earth, this force is called the weight. The unit for weight is the Newton (same as for any other force).
Explanation:
Answer:the difference is weight is the force exerted from an object by gravity
Explanation:
And mass is how much “stuff” is in an object
How is Newtons second law apply to the egg drop ?
Answer:
Newton's Second Law is applied because of the acceleration caused by natural forces as the egg is plummeting to the earth. And the amount of acceleration the egg has will be largely affected by the amount of force Mr. Baker uses to hurl the egg to the ground.
Explanation:
hope that helps
10 Kg box rest on 30 degree incline and begins to slide down.(a) What is the acceleration if no friction is present?(b) What is the acceleration if the coefficient of kinetic friction is 0.2?(c) What is the final speed of box when it reaches the bottom of an incline that is 200 m length? (use the acceleration in part b)
( a) The acceleration of the box in the absence of friction is 8.49 m/s².
(b) The acceleration of the box in the presence of friction is 1.7 m/s².
(c) The speed of the box at the bottom of the incline is 18.44 m/s.
What is the acceleration of the box in absence of friction?
The acceleration of the box if no friction is present is calculated by applying Newton's second law of motion.
mg cosθ = ma
g cosθ = a
where;
g is acceleration due to gravityθ is the angle of inclination of the rampThe acceleration of the box in the absence of friction is calculated as;
a = ( 9.8 ) x ( cos 30 )
a = 8.49 m/s²
The acceleration of the box in the presence of friction is calculated as;
Ff = ma
where;
Ff is the force of frictionμmg cosθ = ma
μg cosθ = a
( 0.2 x 9.8 x cos 30 ) = a
1.7 m/s² = a
The speed of the box at the bottom of the incline is calculated as follows;
v² = u² + 2ah
where;
u is the initial velocity of the box = 0h is the vertical height of fall of the boxa is the acceleration of the boxv² = 0 + 2ah
v = √ ( 2ah )
h = L sinθ
v = √ ( 2 x a x L sinθ )
v = √ ( 2 x 1.7 x 200 x sin 30 )
v = 18.44 m/s
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What happens when weathering and erosion work together?
A. New mountains are created
B. The climate changes overnight
C. Metal objects become rusty
D. They change the earths surface
Plssss help
Answer:
A. New mountains are created
On Earth, what can a divergent boundary
cause?
A. An iceberg
B. A plateau
C. A rift valley
Answer: C
Explanation:
Divergent plate boundary is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges.
sun *
a.) the hunter
b.) Pole Star
c.) little bear
d.) pattern of stars
e.) nearest star
Plz help :> <3
Answer:
E
Explanation:
why is sun considered the center of the solar system
Answer: All the planets in our solar system rotate around it without the sun itself moving therefore all the planets make a cicular shape and the sun is in the middle
Explanation:
A pendulum is swimging. It swings 85 complete swings and this takes 102 seconds. What is the frequency?
Answer:
0.833 Hz
Explanation:
While, there are plenty of ways to calculate frequency, the one formula you should use in this case is:
#times/seconds --> 85/102
= 0.833 Hz
Disadvanlayes and advantager of the and A and B
Answer:
Advantages
If there is a fault in one of the electric appliances, the current is able to pass through different paths of the circuit.
Disadvantages
In parallel circuits, we cannot increase the voltage since the resistance decreases in the parallel circuit.
Explanation:
1. Four students investigated the effect of gravity on falling objects. The students all used the same three balls and dropped them from a height of 8 meters. They recorded the time it took for each ball to hit the ground. Which student most likely had an error in the results?
(1 point)
Ziva
Jade
Owen
Eduardo
2.A student designs an investigation to study the effect of gravity on objects on Earth. He will use the criteria shown. How can the student improve the investigation?
(1 point)
by dropping the balls from the same height
by using balls that are the same mass
by finding balls made from different materials
by measuring the circumference of the balls
Answer:
1.Owen
2.By dropping the balls from the same height
3.She dropped the balls from different heights
4. Perform a second trial
pressure, V is volume , T is temperature of a gas and R is gas constant.
b) Can the sum of two equal vectors be equal to either of the vectors?
Explain
A 5.0 kg bowling ball is sitting on a rack and its gravitational potential energy is 74 J. How high is the bowling ball above the floor? GIVE WORK
Answer:
1.48m
Explanation:
mgh=Wp
h=Wp/mg
h=74J/50N
h=1.48m
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Work, energy and power.
Potential energy = m*g*h, here g = 9.8 m/s^2 (universal value)
hence, h = P/m*g
==> h = 74/ 5*9.8
===> h = 74/49
==> h = 1.51 meters
hence the height is 1.51 m
In some areas, hydroelectric power is not geographically appropriate and a different renewable energy source would be a better option. A conservation group is looking for renewable energy sources other than hydroelectric energy that could be used to generate electricity in grassland ecosystems, such as in the midwestern United States or in a savanna in Africa.
Required:
a. Propose a different renewable resource to use that would be a realistic solution to generating electricity without using fossil fuels or hydroelectric power in a grassland ecosystem.
b. Justify the solution proposed above by explaining a potential advantage of using a different renewable resource to generate electricity.
Answer:
a) wind power system, turbines powered, solar power system
b) the possibility of creating jobs for the local workforce and of maintaining the environment without damaging it.
Explanation:
In a grassland system it may not have great changes in height or mountain system where it is easy to represent a river, therefore a hydroelectric power system is not very feasible.
a) You can have several alternative energy systems.
* If there is a fairly constant air current, a wind power system could be implemented.
* If there is a river with an acceptable flow, a generation system can be implemented with turbines powered by the river flow.
* Another system is a solar power system
b) To select any of the possible systems proposed, the current and future energy requirements of the region must be analyzed.
The amount of energy that each proposal can supply
Analyze the installation costs and the economic benefits of a given system.
Study the possible problems for the maintenance of each system.
A great advantage of these systems is the possibility of creating jobs for the local workforce and of maintaining the environment without damaging it.
The most plausible renewable energy source in a grassland is wind energy.
Renewable energy refers to energy that is obtained from wind, water biomass or underground heat. All of these sources of energy are inexhaustible and hold great prospect to solving the current energy deficit is many parts of the world.
In grasslands, the most plausible renewable source of energy is wind. Winds are abundant in grasslands . It is more plausible than hydroelectric power because it does not create any adverse environmental impact. It is the cleanest energy source.
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Calculate the gravitational pull between the Earth and the Moon
Answer:
F = 1.99 10²⁰ N
Explanation:
The gravitational attraction is given by the expression
F = [tex]G \ \frac{m_1m_2}{r^2}[/tex]
where G is the constant of attraction 6.67 10⁻¹¹ N m²/kg²
in this case the bodies are the Earth and the Moon
let's calculate
F = [tex]6.67 \ 10^{-11} \ \frac{ 7.36 \ 10^{22} \ 5.98 \ 10^{24} }{ (3.84 \ 10^8)^2}[/tex].67 10⁻¹¹ 7.36 10 22 5.98 1024 / (3.84 108) 2
F = 1.99 10²⁰ N
Solve for x in the diagram below.
(4.2 + 50°
150
T =
Answer:
x = 25
Explanation:
Find the diagram attached
From the diagram,
4x + 50 = 150 (vertically opposite angle)
4x = 150 - 50
4x = 100
x = 100/4
x =25
Hence the value of x is 25
1. It takes Tiffany 0.25 hours to get to school in the mornings. She lives 4.5 miles away
from the school. At what speed is she traveling to get there?
Answer:
0.05
Explanation:
u just divide 0.25/4.5 and u get that
If It takes Tiffany 0.25 hours to get to school in the mornings. She lives 4.5 miles away from the school, then the speed of traveling off the Tiffany would be 28.96 kilometers per hour.
What is speed ?The total distance covered by any object per unit of time is known as speed. It depends only on the magnitude of the moving object.
As given in the problem we have to find the speed It takes Tiffany 0.25 hours to get to school in the mornings. She lives 4.5 miles away from the school,
Speed of traveling = total distance traveled by the Tiffany / Total time
Speed of traveling = 4.5 × 1.609 / 0.25
= 28.96 kilometers per hour
Thus, the speed of traveling off the Tiffany would be 28.96 kilometers per hour .
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True or False: A function of the lymphatic systems is to transport fluids back to the blood
A. True
B. False
Tyrell walks 400 m north. Then he turns west and walks 500 m. At this point he turns south and walks another 400m what is the total distance traveled
He goes 400 m straight then goes 500m to the left side then goes backwards 400m so walking north is cancelled out he covers only 500 m to the west.
If u mean how much distance he travelled from starting point then this is the answer
Answer: He goes 400 m straight then goes 500m to the left side then goes backwards 400m so walking north is cancelled out he covers only 500 m to the west.
If you mean how much distance he travelled from starting point then this is the answer
Simple explanation of string theory, please don’t plagiarize.