Answer:
0.2 Hz
Explanation:
f = v / λ.
Where f = frequency,
v = velocity/speed,
λ = wavelength.
f = v / λ →
f = 2.2m/s / 11 m
f = 2.2 / 11 [1 / s]
f = 1 / 5 [Hz]
f = 0.2 Hz
How does the motion of the molecules change when you increase the temperature
Answer:
They speed up as temperature increases.
Explanation:
As temperatures increases within a molecule the particles will speed up.
Use Newton's second law of motion and a free-body diagram to...
1. ...calculate the normal force acting upon a 50-kg passenger who accelerates upward at a rate of 3.0 m/s/s.
2. ...calculate the normal force acting upon a 50-kg passenger who accelerates downward at a rate of 3.0 m/s/s.
Please don't put any links or I will report you.
Which of these waves CANNOT travel through the vacuum of space?
A) microwaves
B) radio waves
C) light waves
D) sound waves
A roller coaster climbing up hill is an example of
A. Building up nuclear energy
B. Building up potential energy
C. Building up chemical energy
D.building up kinetic energy
Answer: D
Explanation:
While performing a stunt, Danger Dog rides his motorcycle off the edge of a cliff with a velocity of 32 m/s. If the cliff is 45 m high, how far from the base of the cliff will Danger Dog land? Enter your answer in meters. 11 m 96 m 288 m 4 m
Answer:
The correct answer is b: 96 m.
Explanation:
The total distance in the horizontal direction traveled by Danger Dog can be calculated using the following equation:
[tex] x_{f} = x_{0} + v_{0_{x}}t + \frac{1}{2}at^{2} [/tex] (1)
Where:
[tex] x_{f}[/tex]: is the final position in the horizontal direction =?
[tex]x_{0}[/tex]: is the initial position in the horizontal direction = 0
[tex] v_{0_{x}} [/tex]: is the initial velocity in the horizontal direction = 32 m/s
t: is the time
a: is the acceleration = 0 (he is accelerated only by gravity)
So, we need to find the time. We can find it as follows:
[tex] y_{f} = y_{0} + v_{0_{y}}t - \frac{1}{2}gt^{2} [/tex] (2)
Where:
[tex] y_{f}[/tex]: is the final position in the vertical direction = 0
[tex]y_{0}[/tex]: is the initial position in the vertical direction = 45 m
[tex] v_{0_{y}} [/tex]: is the initial velocity in the vertical direction = 0
g: is the acceleration due to gravity = 10 m/s²
By solving equation (2) for "t" we have:
[tex] t = \sqrt{\frac{2(y_{0} - y_{f})}{g}} = \sqrt{\frac{2*45 m}{10 m/s^{2}}} = 3 s [/tex]
Hence, the total distance traveled by Danger Dog in the x-direction is (equation 1):
[tex] x_{f} = 32 m/s*3 s = 96 m [/tex]
Therefore, the correct answer is b: 96 m.
I hope it helps you!
Define and describe the following terms: amplitude, wavelength, frequency, period, tension.
Answer:
Amplitude—distance between the resting position and the maximum displacement of the wave
Frequency—number of waves passing by a specific point per second
Period—time it takes for one wave cycle to complete
wavelength λ - the distance between adjacent identical parts of a wave, parallel to the direction of propagation.
Tension - described as the pulling force transmitted axially by the means of a string, a cable, chain, or similar one-dimensional continuous object, or by each end of a rod, truss member, or similar three-dimensional object
Which statement describes the image?
This is an image of an elliptical galaxy.
This is an image of an irregular galaxy.
This is an image of a normal spiral galaxy.
This is an image of a barred spiral galaxy.
Answer:
Its a barred spiral galaxy
Explanation:
Answer:
It is d
Explanation:
electrons that move away from their atoms cause?
Explanation:
when a positive charged object is placed near a conductor electrons are attracted the object when electric voltage is applied an electric field within the metal triggers the movement of the elections making them shift from one end to another end of the conductor electrons will move toward the positive side
PLEASE HELP!! Points will be given for suitable answer! Thank you!
Answer:
its lost 91
Explanation:
After rubbing the hair on your head with a balloon, you determine there are 2.4 x 1018 electrons on your head. What is the charge, in coulombs (C), of your head?
Answer:
q = 0.384 C
Explanation:
The total charge present at the head can be easily found out by multiplying the charge on a single electron with the total number of electrons present on the head:
[tex]q = ne[/tex]
where,
q = total charge on head = ?
n = total no. of electrons on the head = 2.4 x 10¹⁸
e = charge on 1 electron = 1.6 x 10⁻¹⁹ C
Therefore,
[tex]q = (2.4\ x\ 10^{18})(1.6\ x\ 10^{-19}\ C)[/tex]
q = 0.384 C
A body of mass 36 g moves with SHM of amplitude A = 13 cm and period T = 12 s. At
time t=0 the displacement, x, is 13 cm. (a) Find the velocity when x = 5 cm. (b) Find the
force acting on the body when t = 2 s.
Answer:
Explanation:
.......................
List five objects in your daily life that produce sounds with a high pitch and five that produce sounds with a low pitch.
Answer:
Explanation:
High pitch:
-birds chirping
-nails on a chalkboard
-flies buzzing
-children squealing
-whistle
Low pitch:
-thunder
-dogs barking
- earthquakes
- bass drum,
-cannon shot,
5 example of high pitch sound
baby crying , whistle , school bell , fire alarm , chirping of birds
5 example of low pitch sound
thunder , drum , earthquake , generator , animal roar
What is a pitch ?
It is the effect or sensation produce in brain due to sound of some particular frequency
5 example of high pitch sound
baby crying , whistle , school bell , fire alarm , chirping of birds
5 example of low pitch sound
thunder , drum , earthquake , generator , animal roar
learn more about pitch :
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A student investigated
PLEASE HELP!!!!!!!!!!
An object's velocity increases, multiplied by a factor of 9. What factor would its Kinetic Energy increase by?
Answer:
by 81
Explanation:
KE = (1/2)mv^2. If v2 ---> 9v then
KE2 = (1/2)m(9v)^2 = 81[(1/2)mv^2]
= 81 KE
Answer:
by a factor of 4
Explanation:
The kinetic energy is proportional to the square of the speed so doubling the speed increases.
7. A train 100 m long is moving with the velocity of 72 km/h. Find the time it takes to cross the bridge which is 2 km long?
a) 1050 S
b) 10500 s
c) 10.5 s
d) 105 s
Answer:
d) 105 s
Explanation:
Given the following data;
Distance A (length of train) = 100 m
Velocity = 72 km/h to meters per seconds = 72 * 1000)/3600 = 72000/3600 = 20 m/s
To find the time;
Time = distance/speed
Time = 100/20
Time = 5 seconds.
II. When the distance (bridge) is 2km;
Distance B = 2km = 2*1000 = 2000 meters
Time = distance/speed
Time = 2000/20
Time = 100 seconds
Therefore, total time = 5 + 100 = 105 seconds
The speed an
object travels in a
specific
DIRECTION
Is this speed velocity or acceleration
What is density?
A- How much space an object takes
up
B- The amount of matter in a certain
amount of space
C- How much water an object
displaces
D- How much an object is affected by
gravity
Answer:
B- The amount of matter in a certain
amount of space
Explanation:
Density is the amount of matter an object has in a certain space. To find density, divide the mass of an object by the volume of an object.
Answer:
C- How much water it displaces
Explanation:
The mass of a baseball is 100 grams and the volume is 25 cm cubed. What is the density?
Answer:20 g/cm.
Explanation:
Answer:4g/cm3.
Explanation: The Density of a substance or object is the mass of the substance per unit volume of the object.
M is mass, =100g
V is volume = 25cm3
Question 1
4
An object is located 90 m in front of a lens. An image is produced 40 m away from the
lens. What is the focal length of the lens?
O 15.3 m
0.025 m
O 27.7 m
O .011 m
Note: Plagiarism will be reported
Any Links Or Unrelated Answers Will Be Reported
Explain Newton's Law Of Gravity, and explain how the formula works correctly and combines mathematical arithmetic to figure out gravity.
Answer:
Explanation:
Newton's Law Of Gravity states two masses will have an attraction force that is proportional to their masses and inversely proportional to the square of their separating distance.
Mathematically it is expressed as Force = G * M1 * M2 / d^2 where
G is the gravitational constant, M1 and M2 are the masses and d is the separating distance.
Which of the following statements is best supported by the data in the table?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
The genes for having large fruit became more common in the S. lycopersicum population over time due to selection of the large fruit trait by humans.
(Choice B)
B
During the process of tomato domestication, humans likely crossed plants with a higher-than-average number of fruits per inflorescence to create each new generation.
(Choice C)
C
Having many fruits per cluster is a disadvantageous trait for S. pimpinellifolium in the wild, likely because of the energy costs associated with fruit development.
(Choice D)
D
The genes for having large fruit became more common in the S. pimpinellifolium population over time, likely because the large fruit trait increased the probability of seed dispersal.
Answer: Choice A)
Explanation:
15 points!! pleas help! A rollercoaster cart that has a mass of 4500 kg has 67.5 kJ (kilojoules), or 67,500 J (joules), of gravitational potential
energy. What is its height above the ground?
PT.2
The same 4500 kg rollercoaster cart is moving with 63.0 kJ (kilojoules), or 63,000 J (joules), of kinetic energy at the
bottom of its biggest hill. What is its velocity?
A 22 g block of ice is cooled to −70 ◦C. It is added to 589 g of water in an 83 g copper calorimeter at a temperature of 21◦C. Find the final temperature. The specific heat of copper is 387 J/kg · ◦C and of ice is 2090 J/kg ·◦C . The latent heat of fusion of water is 3.33 × 105 J/kg and its specific heat is 4186 J/kg · ◦C . Answer in units of ◦C
Help me with this Bell Ringer / Answer Only / Ez 30 Points /
identifying the forces among the four particles in the Helium nucleus atom and explain why the nucleus stays together.
(Write a paragraph)
Explanation:
the forces among the four particles in the helium nucleus atom are strong, weak, electromagnetic and gravity
What way is more effective when trying to make magnets repel further/faster, using strong magnets over weak magnets or putting the magnets closer together?
Answer:
north pole of a magnet repels the north pole of another magnet no matter of their shape , size , weakness , strength ,etc .
Explanation:
A pulse with a height of +0.5 meter encounters a second pulse with a height of +2.3 meters. A. The two pulses interfere: B. The resulting height of the medium when the pulses interfere will be: ____m
CAN SOMEONE IN THE COMMETS ON EDG HELP ME WITH THIS IM NOT DOING THIS 4 POINTS I ACTULLY NEED HELP AND STRUGGLING U GUYS CAN CAN PUT A 1.0 STAR I REALLY DONT CARE BUT CAN SOMEONE HELP PLZ
Convertir 0.3 Hm en cm.
Answer:
3000 cm
Explanation:
What different forms of energy are present when an egg crashes into the egg catcher?
Answer:
An egg raised above the ground has potential energy due to the force of gravity. When dropped, the egg's potential energy is converted into the kinetic energy of motion. :)
Explanation:
Jim wishes to push a 100. N wood crate across a wood floor.What is the minimum horizontal force that would be required to start the crate moving?
For the wood crate to move, the force applied (minimum horizontal force) must be greater than the static friction between the wood crate and the wood floor
Given that Jim wishes to push a 100. N wood crate across a wood floor.
The weight of the wood = 100N
The weight will produce a normal reaction N which is equal in magnitude to the magnitude of the weight. That is,
N = mg = 100N
For the wood crate to move, the force applied must be greater than the static friction between the wood crate and the wood floor.
Static friction = μN
Where μ = static friction.
Therefore, the minimum horizontal force that would be required to start the crate moving depend on the nature of the surface of the wood floor.
Learn more about Friction here: https://brainly.com/question/13940648
Which beach balls have potential energy and not kinetic energy?
Answer:
Beach ball 4
Explanation:
it is because, Potential Energy = M G H
P(e) directly proportional to H.
if H increase then P energy also increases