The _____is a measure of the number of waves that pass a point in a given amount of time
What process is represented by this redox equation ? 6H 2 O+6CO 2 C 6 H 12 O 6 +6O 2
Answer:
C. Photosynthesis
Explanation:
Photosynthesis is a process by which plants and photosynthetic bacteria obtain their food in presence of sunlight from water and carbon dioxide. They produce glucose as the food and oxygen is emitted as the byproduct. The equation for photosynthesis is - 6H2O+6CO2 → C6H12O6 + 6O2
Thus, the correct answer is 'C.Photosynthesis.'
Friction that occurs and gases and liquids is called what? friction
Friction between solid objects & fluids (gases & liquids) is called "FLUID FRICTION".
Explanation:
HOPE ITS HELPFUL.
I need help :(((((((((((
Answer:
4- false
5- false (i think..)
Explanation:
name of impurities present in zinc plate used in simple cell.
Mercury is present in zinc plate which is used in simple cell
help please, it’s on my physics paper!
Answer:
15.4
Explanation:
770x14% = 107.8
rearrange f =kx to get k (constant)
k = f/x
x is the distance stretched , so 42 - 35 =7
so 107.8/7 =15.4
can someone double check
Answer:
k = 44000 N/m is the answer.
Explanation:
Gravitational Potential Energy = 770J
Elastic Potential Energy = 14% of 770J
= 14/100 × 770
= 107.8J
Extension (x) = 42 - 35 = 7cm = 7 × 10⁻²m
To find the spring constant (k)
Elastic Potential Energy Formula:
[tex]U = \frac{1}{2}kx^2[/tex]
107.8 = 1/2 × k × (7 × 10⁻²)²
215.6 = 0.0049 × k
k = 215.6/0.0049
k = 44000 N/m
what is a material used to reduce or prevent the transfer of electricity, heat, or sound ?
Answer:
The material you're looking for is insulation.
Explanation:
It reduces and/or stops electricity waves, heat waves, and sound waves from going past.
I would assume its A. or B.
Answer:
B
Explanation:
remember that you are looking for the value of the graph
to take into account or value a lot: prize, estimate to value your opinion. 2nd: estimate or assign the monetary value of: appraise a necklace. b: qualify or scale in utility, importance or general value: evaluate. value.
Which of the following describes the moon’s motion around Earth?
A) The moon is in free fall around the Earth.
B)The acceleration of the moon is toward the center of Earth.
C)The moon is falling toward the center of Earth and away from the straight line path it would travel without gravity.
D)All are correct.
Answer:
i think B?
Explanation:
1.) A ball is thrown horizontally from the top of a building. What is the vertical velocity of the ball after 1 second?
A. 0 m/s
B. 9.8 m/s
C. 4.9 m/s
D. 19.6 m/s
2.) This is a required question
What is the horizontal acceleration of a projectile?
A. 0 m/s2
B. 8.9 m/s2
C. 4.9 m/s2
D. 9.8 m/s2
3.) If air resistance is neglected, at what angle a projectile must be projected to attain the maximum range?
A. 40
B. 75
C. 45
D. 90
4.) Neglecting air resistance, the range of a projectile projected at an angle of 20 degrees is the same as that of _______ if they were released with the same velocity.
A. 50
B. 70
C. 60
D. 80
5.) What do you call the motion of an object with constant acceleration?
A. circular motion
B. uniform motion
C. constant motion
D. uniformly accelerated motion
CAN SOMEONE PLEASE HELP ASAP. THANK U
Q.1 - V = u + at
u = 0, a = g = 9.8, t = 1
V = 0+9.8*1 = 9.8 m/s
Q 2- In horizontal position the velocity remains same hence a= dv/t, since change in velocity is zero the acceleration also equal to zero
Q.3- After neglecting the air resistance at 45° angle the maximum range is obtained.
let's prove, consider the range have maximum angle at θ, now range is given by
R = u²Sin2θ/g where sin2θ can we written as 2sinθ.cosθ.
Now the range value is directly proportional to the product of sin & cos of firing angle & this maximum value is obtained at 45°
Q.4 The range of two angle will be same if and only if they give 90° on addition.
20+x = 90,
x = 90-20 = 70°
Q.5 The motion with constant acceleration is known as uniformly accelerated motion.
Thanks for joining brainly community!
Answer:
B. 9.8 m/sA. 0 m/s²C. 45°B. 70°D. uniformly accelerated motionExplanation:
1.
u=0m/s
v=?
a=9.8m/s²
t=1sec
now
we have
v=u+at
v=0+9.8*1
v=9.8m/s
3.
angle is measured in sin and cos angle where maximum angle's value is gained by 45°
4.
we have
range
R=[tex]\frac{u²sin2\theta}{g}[/tex]
For
angle =20°
R1=[tex]\frac{u²sin2*20}{g}[/tex].......[1]
another angle be [tex]\theta[/tex]
R2=[tex]\frac{u²sin2\theta}{g}[/tex].......[2]
since R1=R2
By comparing we get
Sin40=Sin([tex]2\theta[/tex])
Sin(180-40)=Sin([tex]2\theta[/tex])
we
140=[tex]2\theta[/tex]
[tex]\theta[/tex]=70°
What is the speed of a wave with a frequency of 6 Hz and a wavelength of 12 m? No links
72 m/s
Explanation:
Given,
Frequency ( f ) = 6 Hz
Wavelength ( λ ) = 12 m
To find : -
Speed ( v ) = ?
Formula : -
v = f x λ
v
= 6 x 12
= 72 m/s
Therefore,
the speed of a wave with a frequency of 6 Hz and a wavelength of 12 m is 72 m/s.
A bicycle with a mass of 100kg hit a wall at an acceleration of 4 m/s2, what is the force?
Answer:
400N
Explanation:
F= ma
F= 100 x 4
F= 400N
energy transferred in which way is usually thought of as being ‘wasted’?
Answer:
The energy transfer to light energy is the useful transfer. The rest is 'wasted'. It is eventually transferred to the surroundings, making them warmer. This 'wasted' energy eventually becomes so spread out that it becomes very difficult to do anything useful with it.
lana summarized what happens when a ball sitting on top of a grassy hill rolls down the hill.
The motionless ball has potential energy. Once the ball starts to roll down the hill, new kinetic energy is made. As the ball rolls across the grass, it slows down. The kinetic energy of the ball is converted to other forms of energy.
Which best describes Alana’s error?
The motionless ball does not have energy because it is still.
Kinetic energy is not made; it is a result of energy transformation.
The ball cannot slow down unless someone touches it.
The energy is not converted; it disappears.
Answer:
Kinetic energy is not made; it is a result of energy transformation
Explanation:
Let's discuss what happens to the ball when it is on top of the mountain and rolls down.
Initially the ball has a total mechanical energy, which at this point is potential.
Em₀ = U = mg h
When the ball starts to roll down, part of this potential energy will be transformed into kinetic energy.
Em = K + U = ½ m v² + mg y
but mechanical energy is conserved.
The presence of the grass introduces a force in the opposite direction that creates a friction force work (not conservative), for which the total mechanical energy decreases
W_{friction}= Emf - Emo
When examining the answers, the one that best describes Lana's error is:
Kinetic energy is not made; it is a result of energy transformation
Answer:
Your answer is B) Kinetic energy is not made; it is a result of energy transformation.
Explanation:
On which planet can you jump about the same height as Earth? Explain your answer.
Answer:
Venus
Explanation:
Venus and earth have a similar gravitational pull because they are almost the same size (venus is slightly smaller) and because of the similar mass.
If a running system has a total change in the heat of 315 joules, and it is running at a temperature of 350 K, what is the entropy? Α.1.54 joules/kelvin B.0.847 joules/kelvin C.1.22 joules/kelvin D. 0.900 joules/kelvin E. 0.762 joules/kelvin
Answer:
0.900
Explanation:
joules" (and any subsequent words) was ignored because we limit queries to 32 words.
Answer:
See image
Explanation:
Plato
over due by alot please help
Answer:
i would say the third one
Explanation:
may i be brainliest?
Can some one help me with this question its hard :( down below ill give brainliest
When the net force acts at right angles to an object’s motion, what does it do to the object’s motion?
a. it changes the object’s speed
b. it changes the object’s direction
c. it changes both the speed and direction of the object’s motion.
Answer:
B. It changes the objects direction
a microwave with a frequency of 5.0 x 10^10 hertz has a period of
Answer:
A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.
Explanation:
Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).
The period is the time that elapses between the emission of two consecutive waves. In other words, it is the time it takes for a complete wave to pass a reference point. The period (T) is simply the inverse of the frequency (f):
[tex]T=\frac{1}{f}[/tex]
In this case, f=5*10¹⁰ Hz. So, replacing in the definition of period T:
[tex]T=\frac{1}{5*10^{10} Hz }[/tex]
Solving:
T= 2*10⁻¹¹ seconds
A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.
A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.
What is fequency?The fequency is defined as the number of cycles achieved by the any wave it is expressed in hertz.
Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).
The period is the time that elapses between the emission of two consecutive waves. In other words, it is the time it takes for a complete wave to pass a reference point. The period (T) is simply the inverse of the frequency (f):
[tex]T=\dfrac{1}{f}[/tex]
In this case, f=5*10¹⁰ Hz. So, replacing in the definition of period T:
[tex]T=\dfrac{1}{5\times 10^{10}}=2\times 10^{-11}\ Sec[/tex]
A microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.
Thus a microwave with a frequency of 5*10¹⁰ hertz has a period of 2*10⁻¹¹ seconds.
To know more about Frequency follow
https://brainly.com/question/25699025
1. A 110.0 g sample of metal is warmed 10.0 °C when 70.0 calories is added. What is the specific heat of this metal?
2. How much heat must be supplied to a 550.0 g aluminum pan to raise the temperature of the pan from 14.0°C to 108.0 °C?
Answer:
1. The specific heat of the meatal is approximately 0.266 J/(g·°C)
2. 46.6334 kJ
Explanation:
1. The given mass of the sample of metal, m = 110.0 g
The temperature change of the metal when heat is added, ΔT = 10.0°C
The amount of head that was added, ΔH = 70.0 Calories = 292.88 Joules
The formula for heat heat capacity of a material is given as follows
Q = m × c × ΔT
Where;
Q = The quantity of heat added = 292.88 Joules
m = The mass of the material = 110.0 g
ΔT = The temperature change = 10.0°C
c = The specific heat capacity of the material
We get;
c = ΔH/(m × ΔT)
Which gives;
c = 292.88 J/(110.0 g × 10.0°C) ≈ 0.266 J/(g·°C)
2. The given mass of aluminum, m = 550.0 g
The initial temperature of the aluminum, T₁ = 14.0°C
The final temperature of the aluminum, T₂ = 108.0°C
The specific heat of aluminum, c = 0.902 J/(g·°C)
We get;
Q = m × c × (T₂ - T₁)
Q = 550.0 g × 0.902 J/(g·°C) × (108.0°C - 14.0°C) = 46,633.4 joules = 46.6334 kJ
The heat that must be supplied to 550.0 g of aluminum pan to raise the temperature of the pan from 14.0°C to 108.0°C, Q = 46.6334 kJ.
A nucleus splits to form two or more smaller nuclei during which process?
A. Positron emission
B. Nuclear fission
C. Nuclear fusion
O D. Gamma decay
Answer:
nuclear fission
Can someone write a 200 speech that explains the difference between analog and digital waves and which one is better?
Answer:
Analog and digital signals are the types of signals carrying information. The major difference between both signals is that the analog signals have continuous electrical signals, while digital signals have non-continuous electrical signals.
Explanation:
Analog Signals were used in many systems to produce signals to carry information. These signals are continuous in both values and time. The use of analog signals has been declined with the arrival of digital signals. In short, to understand the analog signals – all signals that are natural or come naturally are analog signals. Digital Signals , unlike analog signals, digital signals are not continuous, but signals are discrete in value and time. These signals are represented by binary numbers and consist of different voltage values. Their differences are as follows:
Analog Signals Digital Signals
Continuous signals Discrete signals
Represented by sine waves Represented by square waves
The Human voice, natural sound, analog electronic devices are few examples Computers, optical drives, and other electronic devices
A Continuous range of values Discontinuous values
Records sound waves as they are Converts into a binary waveform.
Only be used in analog devices. Suited for digital electronics like computers, mobiles, and more.
I think a Digital signal is better.
The distance covered by a car moving with a speed of 36 km/h in 20 minutes is
Answer:
D=12000m
Explanation:
Distance
Speed=distance/time
Where, speed is given in m/s
Time is given in s
Distance is given in m
Data
S=36km/h
T=20minutes
D=?
D=S*T
D=(36*1000m)/3600s*(20*60s)
D=36000m/3600s*1200s
D=10m/s*1200s
D=12000m
if you have any questions, let me know
Answer:
The red car would experience the greatest acceleration.
Explanation:
Newton says that Force equals mass times acceleration or F = ma
We get a = F/m
If we want the greatest acceleration or a, mass or m must be the lowest.
An object with a mass of 1.5 kg accelerates 10.0 m/s^2? when an unknown force is applied to it. What is the amount of the force?
Answer:
15 N
Explanation:
f=ma
f=1.5*10
f=15 N
transparent materials allow electromagnetic waves to be while trapping thermal energy
1. transmitted
2. reflected
3. absorbed
Answer:
2. reflected
hope it is helpful to you
A car moving with a speed of 20 m/s
applies brakes. What is the acceleration
of the car?
Explanation:
[tex]speed : U = 20 \: m {s}^{ - 1} \\ {V}^{2} = {U}^{2} + 2aS \\ 0 = {20}^{2} + (2 \times a \times S) \\ a = \frac{200}{S} \: m {s}^{ - 1} [/tex]
PLEASE HELP!!!!
1.38 C of charge flow out of a
9.00 V battery in 11.8 s. How
much resistance is attached to
the battery?
(Hint: What is the definition of current?)
(Unit = Ohm)
No links please
Answer:76.9
Explanation:
First divide the Charge by the time that gives you I den V=IR we already have V n I we need R divide 9.00 by I which equals 76.9
Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could Chang leave out and still light up the bulb? the switch the battery the wire the light bulb
We could choose to leave out the switch and simply join the wires together and the bulb will still light up.
What is a circuit?A circuit is defined as pathway that has been designed for the flow of current. Now we know that a circuit must have a battery, connecting wires and the bulb itself.
However, we could choose to leave out the switch and simply join the wires together and the bulb will still light up.
Learn more about circuit: https://brainly.com/question/365923