How do simple machines make it easier to move an object?
Answer:
by Multiply Force,change direction and speed multiply
Sound is a longitudinal wave that travels at speed 343343m/s in dry air at room temperature and standard pressure. Your ear is capable of differentiating sounds that arrive at the ear just 1.00 milliseconds apart. What is the minimum distance between two speakers that produce sounds that arrive at noticeably different times
Answer:
d = 0.343 m
Explanation:
Given that,
The speed of a longitudinal wave, v = 343 m/s
Your ear is capable of differentiating sounds that arrive at the ear just 1.00 milliseconds apart.
We need to find the minimum distance between two speakers that produce sounds that arrive at noticeably different times.
Let the distance be d. So,
[tex]d=v\times t\\\\=343\times 10^{-3}\\\\=0.343\ m[/tex]
So, the required distance is equal to 0.343 m.
A Boulder drops in the water and creates a wave with a period of 2s/cycle and a wavelength of .75 m/cycle. How fast is the wave moving ?
Answer:
v = 0.375 m/s
Explanation:
Given that,
The wavelength of a wave is 0.75 m/cycle
The period of a wave is 2s/cycle
We need to find the speed of the wave. We know that,
[tex]v=\dfrac{d}{t}[/tex]
Substitute all the values,
[tex]v=\dfrac{0.75}{2}\\\\v=0.375\ m/s[/tex]
So, the speed of the wave is equal to 0.375 m/s.
PLEASE HELP! I'LL GIVE BRAINLEST. PLEASE A RIGHT ANSWER
Answer:
The answer is a - is the amount of matter in this object
Explanation:
What is the equivalent resistance of the circuit pictured below?
Answer:
450 since in series we add the resistance
which is more bussin? mcdonald’s or taco bell
Answer:
Coming from my perspective sence I see the lines are super long during lunch I would have to say McDonald’s
Which term describes the amount of energy that is used in a circuit each second?
A. Power
B. Current
C. Voltage
D. Resistance
Answer:
Power
Explanation:
Dominant alleles are _____.
Only expressed if paired with a recessive allele
Only expressed if paired with another dominant allele
Always expressed
Never expressed
They're always expressed.
A 70.0 kg sprinter accelerates at a rate of 5.00 m/s2. What is the net force generated by the sprinter?
Answer:
F = 350 N
Explanation:
Force Equation
F=ma
Newton's second law states that force is proportional to what is required for an object of constant mass to change its velocity. This is equal to that object's mass multiplied by its acceleration. We use Newtons, kilograms, and meters per second squared as our default units, although any appropriate units for mass (grams, ounces, etc.) or velocity (miles per hour per second, millimeters per second2, etc.) could certainly be used as well - the calculation is the same regardless.
How to solve
Formula: FNet = Fa + Fg.
F = m * a
F = 70.0 kg × 5.00 m/s2
F = 350 N
Newtons are derived units, equal to 1 kg-m/s². In other words, a single Newton is equal to the force needed to accelerate one kilogram one meter per second squared.
A friend of yours who is traveling the world reports that she recently experienced a day on which the surface wind blew from the southeast while simultaneously the clouds overhead were moving from east to west. Independently, she is made aware of the fact that on that day the PGF was the same at the surface and at the cloud height. What hemisphere was she in at the time
Answer:
At that time, she was in the southern hemisphere
Explanation:
She is witnessing the southeastern trade breeze because the cloud is passing from east to west and she is also witnessing a storm from the southeast.
Because of the Coriolis effect, which deviates the atmosphere in the left-hand side of the southern hemisphere and generates a southeastern wind, this wind did not blow directly from south to east.
How do attitudes help us develop our self-concept?
Answer:
Attitudes help determine self concept; but, unlike values, they are more narrowly defined. The relationship between values and attitudes is close because values are reflected in attitudes. Your attitude says something about your value system.
A particle of mass M is moving in the positive x direction with speed v. It spontaneously decays into 2 photons, with the original particle disappearing in the process. One photon has energy 233 MeV and moves in the positive x direction, and the other photon has energy 21 MeV and moves in the negative x direction. (5) (a) Draw a picture of this process. What is the total relativistic energy of the particle before its decay
Solution :
Mass of the particle = M
Speed of travel = v
Energy of one photon after the decay which moves in the positive x direction = 233 MeV
Energy of second photon after the decay which moves in the negative x direction = 21 MeV
Therefore, the total energy after the decay is = 233 + 21
= 254 MeV
So by the law of conservation of energy, we have :
Total energy before the decay = total energy after decay
So, the total relativistic energy of the particle before its decay = 254 MeV
Look at the distance-time graph below. It shows Angela's journey as she walks to the end of the road and back. The gradient represents Angela's __________. What one word completes the sentence?
Answer:
The gradient here represents Angela's Velocity.
Explanation:
A distance-time graph has distance on its y-axis and time on its x-axis. Therefore, the gradient of the distance-time graph is given by the following formula:
[tex]Gradient = \frac{Change\ on\ y-axis}{Change\ on\ x-axis} \\\\Gradient = \frac{Distance\ Covered\ by\ Angela}{Time\ taken\ to\ cover\ the\ distance}\\\\Gradient = Angela's\ Velocity[/tex]
Since the rate of change of distance is called the velocity.
Therefore, the gradient here represents Angela's Velocity.
Give 3 combinational logic circuits on basic electronic devices that can be found at home.
Answer:
Leds switchs battery
Explanation:
....................
Answer: ptop tv calculator
Explanation:
may anyone please help me with all of this side of the packet?:) ill give all my points for this :(
Answer: 4 is b 8 is c
Explanation:
A 10v battery is connected in series with 2 resistors. R1 is 1 ohm and R2 is 4 ohms. What is the current that goes across R1?
Answer:
Current in circuit = 2 amp
Explanation:
Given:
Voltage of battery = 10 V
First Resistance R1 = 1 ohm
Second Resistance R2 = 4 ohm
Resistor connected in series
Find:
Current in circuit
Computation;
Resistor connected in series
So,
Total resistance R = First Resistance R1 + Second Resistance R2
Total resistance R = 1 ohm + 4 ohm
Total resistance R = 5 ohm
Current in circuit = V / R
Current in circuit = 10 / 5
Current in circuit = 2 amp
20. What type of simple machine is an ax?
O wedge
O inclined plane
O wheel and axle
O lever
Answer:
The answer will be A. Wedge
Explanation:
How did the approximate speed
of the marbles belore each collision compare
to after each collision?
Answer:
i think this may help you
Explanation:
In an inelastic collision the total kinetic energy after the collision is not equal to the total ... If there are no net forces at work (collision takes place on a frictionless surface ... Momentum is equal to the product of mass and velocity. ... bodies before the collision is equal to the total kinetic energy of the bodies after the collision.
____ is the amount of matter an object and the mass of an _____ does not change location.
Answer:
Mass
Object
Explanation:
Answer:
Mass is the amount of matter in an object and the mass of an object does not change location.
Which statement is true of a catalyst in a reaction?
A. It acts as a reactant, in place of the original reactant.
B. It gets used up in the reaction.
C. It changes the activation energy required for the reaction.
D. It makes a reaction faster by adding energy.
Answer:
Hello There!!
Explanation:
The answer is=>C. It changes the activation energy required for the reaction.
hope this helps,have a great day!!
~Pinky~
The true statement for a catalyst used in a reaction is that it makes a reaction faster by adding energy. The correct option is D.
What is a catalyst?A catalyst is a substance that increases the chemical reaction rate without undergoing any permanent chemical change in itself. It makes the reaction faster.
The correct option is D.
Learn more about catalyst.
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Explain Newtons Second Law of motion in terms of momentum.
Answer:
the net external force equals the change in momentum of a system divided by the time over which it changes. The change in momentum is the difference between the final and initial values of momentum.
Explanation:
i hope it will help
can the mass of an object is measured by a scale?
Answer: In physics, mass is not the same as weight, even though mass is often determined by measuring the object's weight using a spring scale, rather than balance scale comparing it directly with known masses.
Explanation:
In physics, mass is not the same as weight, even though mass is often determined by measuring the object's weight using a spring scale, rather than balance scale comparing it directly with known masses.
A transformer has 100 turns in the primary coil and 150 on the secondary. It is a
- step-down transformer.
- decreasing transformer.
- step-up transformer.
- increasing transformer.
Answer:
This transformer would be a step-up transformer.
Explanation:
In a transformer, the primary coil is connected to the AC input while the secondary coil is connected to the AC output.
Let [tex]V_P[/tex] and [tex]N_P[/tex] denote the primary voltage (at the input) and number of turns in the primary coil.
Let [tex]V_S[/tex] and [tex]N_S[/tex] denote the secondary voltage (at the output) and the number of turns in the secondary coil.
Ideally, the voltage in each coil would proportional to the number of turns in that coil:
[tex]\displaystyle \frac{V_S}{V_P} = \frac{N_S}{N_P}[/tex].
For example, in this question, [tex]N_P = 100[/tex] (primary coil, connected to the AC input) whereas [tex]N_S = 150[/tex] (secondary coil, connected to the AC output.)
[tex]N_S = 1.5 \, N_P[/tex]. Accordingly, the voltage in the secondary coil (AC output) would be approximately [tex]1.5[/tex] times the voltage in the primary coil (AC input): [tex]V_S = 1.5\, V_P[/tex].
Hence, the secondary voltage of this transformer (AC output) would exceed the primary voltage (AC input.) This transformer would be a step-up transformer.
Drag each tile to the correct box.
Adam takes a bus on a school field trip. The bus route is split into the five legs listed in the table. Find the average velocity for each leg of the trip. Then arrange the legs of the trip from highest velocity to lowest.
Leg Distance (km) Time (min)
A 18 9
B 25 15
C 24 8
D 48 12
E 15 7
Can someone make a list of 10 simple things people can do to maintain fitness ? Please I literally need help.
Answer:
1. drink lots of water
2. eat healthy breakfast
3. plan your meals
4. set a deadline
5. exercise at least 30 minutes a day even 10 minutes 3 times a day is good
6. eat fruits and vegetables
7. eat whole grains instead of white
8. get a good night's sleep
9. stay motivated
10. take time for mental health
A 0.02kg lead bullet traveling 200 m/s
strikes an armor plate 2kg at rest. Assume
all its kinetic enrgy transfer to heat what is
the change in temperature? the specific heat
of lead is for lead is 130 J/kg.C
Answer:
[tex]\Delta T=1.53^{\circ}[/tex]
Explanation:
Given that,
Mass of a lead bullet, m = 0.02 kg
Speed of the bullet, v = 200 m/s
It strikes with an armor plate 2kg at rest. All its kinetic energy is transferred to heat. We need to find the change in temperature.
A/c to the law of conservation of energy,
[tex]\dfrac{1}{2}mv^2=Mc\Delta T\\\\\Delta T=\dfrac{mv^2}{2Mc}\\\\\Delta T=\dfrac{0.02\times 200^2}{2\times 2\times 130}\\\\\Delta T=1.53^{\circ}[/tex]
So, the required change in temperature is equal to [tex]1.53^{\circ}[/tex].
2. Compare and Contrast A fault cuts through
two layers of rock. Above sits a layer of sand-
stone. How does the age of the fault compare
to the ages of all three rock layers?
Explanation:
The principle of cross-cutting relationships states that a fault or intrusion is younger than the rocks that it cuts through. The fault labeled "E" cuts through all three sedimentary rock layers (A, B,and C) and also cuts through the intrusion (D). So the fault must be the youngest formation that is seen and known of.
The age of the fault A is in between rock B and intrusion D. Hence A is the youngest rock and C be the oldest rock here.
What are faults?A fault is a crack or region of cracks that separates two rock blocks. The blocks might move in relation to one another due to flaws. This movement may happen suddenly, like an earthquake, or it may happen gradually, like creep.
From a few millimeters to thousands of kilometers, faults can vary in length. Over geologic time, most faults cause recurrent displacements. The rock on one side of the fault abruptly shifts in relation to the other during an earthquake. The fault surface may be vertical, horizontal, or at any other arbitrary angle.
The principal of superposition states that, the oldest layer will be the bottom of the young rocks. Here, rock is A is above B and C. Hence, rock A is youngest than layer B and C.
Find more on rock layers:
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The related image is attached below:
A coin is resting on the bottom of an empty container. The container is then fi lled to the brim three times, each time with a diff erent liquid. An observer (in air) is directly above the coin and looks down at it. With liquid A in the container, the apparent depth of the coin is 7 cm, with liquid B it is 6 cm, and with liquid C it is 5 cm. Rank the indices of refraction of the liquids in descending order (largest fist).
a. nC, nA, nB
b. nA, nB, nC
c. nB, nA, nC
d. nC, nB, nA
e. nA, nC, nB
when we placed in the container of real depth assuming = d
if the container filled with liquid A then its apparent depth d' = 7cm
so the refractive index nA = real depth / apparent depth
= d/7cm = 0.1428d
if the container filled with liquid B then its apparent depth d' = 6cm
so the refractive index nB = real depth / apparent depth
= d/6cm = 0.166d
if the container filled with liquid C then its apparent depth d' = 5cm
so the refractive index nC = real depth / apparent depth
= d/5cm = 0.2d
Since the refractive index is inversely proportional to the apparent depth
then the refractive indices are nC > nB > nA
an example of a household appliance with a low and high power rating
Answer:
Explanation:
There are countless household appliances in every single house. One appliance with a low power rating would be a ceiling fan. On average ceiling fans consume roughly 60w and are found in the majority of houses. On the other side of the spectrum, we have a high power-rating appliance such as a microwave. Microwaves use anywhere between 1000w to 1800w of power in order to function correctly. This is very large power consumption and one of the highest power ratings found for appliances in a household.
If distance between particle become half, the electric force
The force between the two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Hence, if distance between charges is halved (charges remaining kept constant), the force between the two charges is quadrupled.