Answer:
Solution given:
velocity=40cm/s
wave length=5cm
we have
frequency =velocity/wavelength=40/5=8hertz.
the frequency of the wave is 8 hertz.
A dog is running in a circle around a tree, trying to catch a rabbit. The dog's owner notices the
dog completes 4 laps around the tree in 32 seconds and the radius of the dog's circular path is
3 meters. What is the tangential velocity of the dog?
Answer: 2.35 m/s
Explanation:
Given
Dog completes 4 laps around the tree in 32 seconds
Radius of the circular path is 3 m
Time period for single lap is [tex]\frac{32}{4}=8\ s[/tex]
Length of the track is equivalent to the perimeter of the path
[tex]\Rightarrow L=2\pi r\\\Rightarrow L=2\pi \times 3\\\Rightarrow L=6\pi\ m[/tex]
Tangential velocity is given by
[tex]\Rightarrow v_t=\dfrac{L}{t}\\\\\Rightarrow v_t=\dfrac{6\pi}{8}\\\\\Rightarrow v_t=2.35\ m/s[/tex]
Thus, the tangential velocity is 2.35 m/s
If heating 3 g of a substance by 2 °C requires X joules of heat, how much heat will be needed to heat 9 g of the same substance by 4 °C?
Answer:
Explanation:hffdghbjhhfgdvbjnjhjvcfgdfcvhjkm,kjjhgjh
If a=15 m/s², m=2 kg, F=? *
30 N
30kg
30 m/s²
7.5 N
Answer:
F = 30 N
Explanation:
ELECTROMAGNETIC FIELDS PLAN AN INVESTIGATION LAB REPORT FOR EDG.!!!!! WORTH 100 POINTS????????
Answer:ummm ok
Explanation:I really don’t get it but ok
Answer:
so what do we need to do
Explanation:
If a person has the genotype Rr for hair where red is dominant to blue, what phenotype would this person have?
the person's phenotype would be red hair. phenotype is what you see on the outside, genotype is what the dna says. <3
whats the definition of Light speed
explica de que tipo es cada oración según la actitud del hablante
Answer:
Según la actitud del hablante las oraciones se clasifican en enunciativas, interrogativas, etc. ... adverbios o expresiones que complementan a toda la oración (COr): ojalá, quizá.
Explanation:
Tidal energy is alternative source of energy. give reason
Answer:
Tidal energy is alternative source of energy because the energy it produces is free and clean as no fuel is needed and no waste bi-products are produced. It has the potential to produce a great deal of free and green energy.
Which can be observed both on Earth and in an accelerating ship in space that is free from the effect of any gravitational field? Check all that apply.
chairs floating in midair
apples falling from trees
people's feet touching the ground
sky divers moving toward the ground
balls bending downward after being thrown
Answer:
apples falling from trees people's feet touching the ground sky divers moving toward the ground balls bending downward after being thrownExplanation:
When a space ship is accelerating in space, there is a force known as Inertia that kicks in. Inertia will mirror the effects of gravity on the ship even if there is no gravitational field effect such that anything that would happen where there is gravity, would continue to happen.
This means that apples will fall from trees, people's feet will touch the ground, sky divers will be pulled downwards and balls will bend downwards when thrown as well. These are the same effects expected on earth where gravity pulls things towards the earth's core.
Answer:
B,C,D,E
apples falling from trees
people’s feet touching the ground
sky divers moving toward the ground
balls bending downward after being thrown
correct on EDGE2021
Brad is swimming in the ocean on a hot sunny day. He finds the water to be much colder than the sand on the beach, even though the sun is warning them both. Identify the reasons for brads observation
Answer:
When Brad was swimming in the ocean and then he observed that the sand was more hotter than the water of the ocean. The water is colder than the sand because the water needs more energy as compared to sand to change its temperature. This is because the water has a higher specific heat than sand.
Explanation:
12. You and a friend are playing a game of basketball. Explain why the
basketball appears orange, be sure to use terms reflected and absorbed
in your answer. [4]
Help me plssss I’m giving out brainlest and 10 points
Answer:
If the basket ball appears orange then it can be said that it reflects orange light
Explanation:
The color of the object reflected by an object is the color which is viewed by a viewer. Hence, if the basket ball reflects the orange color light , then the ball will appear orange in color to the viewer.
The light absorbed by the object has no role in deciding the color of the object visible to a viewer.
hence, if the basket ball appears orange then it can be said that it reflects orange light.
A radioactive nucleus contains 128 nucleons. It emits a B-particle.
How many nucleons are now in the nucleus?
A
124
B 127
C 128
-D 129
Which type of waves give scientists information about the structure of Earth's interior layers?
Answer:
Seismic waves
Think of earthquakes :)
Calculate the distance between a 3.0 x 10^-5 charge and a 2.0 x 10^-6 2 points
C charge if the force between them is 1000 N.
Answer:
thanks for answer:)
Explanation:
When a certain metal is illuminated with light of frequency 2.9 ✕ 1015 Hz, a stopping potential of 7.0 V is required to stop the most energetic ejected electrons. What is the work function of this metal?
Answer:
4.96 eV
Explanation:
Recall the Einstein photoeletric equation;
KE = E - Wo
Where;
KE = kinetic energy of the ejected photoelectron
E= energy of the incident photon
Wo = Work function
But
KE = eV= 1.6 * 10^-19 C * 7 V /1.6 * 10^-19 C = 7 eV
E = hf/e = 6.6 * 10^-34 * 2.9 ✕ 10^15 Hz/1.6 * 10^-19
E = 11.96 eV
Hence;
Wo = E - KE
Wo = 11.96 eV - 7eV
Wo = 4.96 eV
The Grand Canyon is more than 400 km long and in some places almost 2 km deep. Which model best represents the main process that formed the Grand Canyon?
Answer: Diagram A
Explanation:
The Grand Canyon was created by the constant flow of the Colorado river which physically broke down the rock for billions of years. It then carried off the rock as it flowed and as it kept doing this, the canyon kept getting deeper and deeper.
This is what is described in the first diagram. The water from the faucet is carrying the soil along with it much like the Colorado did to the rocks of the Grand Canyon.
HELP!!!!!!!!!
A toy car has a motor capable of moving the car at 10m/s up a 35 degree ramp. If the motor exerts a force of 500N to the car, what is the power rating of the motor in kW?
Answer:
4.096 kW
Explanation:
Applying,
P = Fvcos∅................. Equation 1
Where P = Power of the motor, F = Force exerted on the motor, v = Velocity, ∅ = angle.
From the question,
Given: F = 500 N, v = 10 m/s, ∅ = 35°
Substitute these values into equation 1
P = 500×10×cos35°
P = 4095.8 W
P = 4.096 kW
Hence the power rating of the moto in kW is 4.096 kW
Which scenario BEST describes an action-reaction pair? *
O A. A person pushes a cart and it rolls forward.
O B. A skateboarder pushes against the ground so she can move forward.
O C. An acrobat jumps on a trampoline and the trampoline moves downwards.
Both A and C
Answer:
C. An acrobat jumps on a trampoline and the trampoline moves downwards.
Both A and C
[tex] - trixiejane[/tex]
The table below shows the speed of sound waves from musical sound sources at 20°C. Which conclusion can be made based on the information in the table? Wave speed and wavelengths can vary inversely to produce the same frequency. Frequency and wave speed can vary directly to produce the same wavelength. Wavelengths and frequency can vary inversely to produce the same wave speed. Frequency and wavelengths can vary directly to produce the same wave speed. Mark this and return
Answer:
c
Explanation:
Answer:
C
Explanation:
Took it on edg
What could it be.... (science)
Answer:
eeeeeeeeeeeeeeeeeeeeeeeeeee
what do you mean by exercise
Answer:
exercise mean any bodily activity that enhances or maintains physical fitness and overall health and wellness.
I hope it will help you
Cuantos CM son 8 newtons
Answer: Be more specific
Answer:
uno thos threse u here me
Explanation:
on which factor does gravitation between any two bodies depend?
Answer:
Gravitational force between two bodies depends on:
1. Masses of the two bodies. The greater an object's mass, the greater its gravitational force.
2. Distance of separation between them. The smaller the distance greater is the gravitational force.
Violet light (410 nm) and red light (685 nm) pass through a diffraction grating with d = 3.33 x 10-6 m. What is the angular separation between them for m = 2?
Answer:10.03
Explanation:
right on acellus
please help I found this confusing
Answer:
A
Explanation:
brainliest
Answer: A
Explanation:
Help me please!
What is the velocity of a 0.1 kg baseball whose momentum is 100?
Answer:
1000m/s
Explanation:
velocity(v)=momentum(p)/mass
=100/.1
=1000m/s
A force of 200N acts between two objects at a certain distance apart .the value of the force when the distance is halved is?
Answer:
800N is the answer
Explanation:
hope it helps
The force between the objects is 200 N and when the distance between the objects is halved then the force between them will be equal to 800 N.
What is Force?A force in physics is an input that has the power to change an object's motion. A mass-containing object's velocity can vary, or accelerate, as a result of a force. Intuitively, a push or a pull can also be used to describe forces.
Being such a vector quantity, a force does have magnitude and direction. The SI unit metric newton is used to measure it (N). The letter F stands for force.
According to Newton's second law's original formulation, an object's net force is equal to the speed that its momentum is changing over time.
As per the given information in the question,
Force, F = 200 N
F1 = G × m₁m₂/ r²
The final force F' = G × m₁m₂/ (r/2)²
= 4G × m₁m₂/ r²
= 4F
So, when the distance between objects is halved, then the force between them increases to 4 times.
So, the force will be,
4F = 4 × 200
= 800 N.
To know more about Force:
https://brainly.com/question/13191643
#SPJ2
Give three examples of how biotechnology affects our everyday lives.
Write and complete sentences
Site your sources
Answer: But what about beer-brewing, crop breeding, and the antibiotic penicillin? These processes and products – some of which have been around for thousands of years – are also examples of biotechnology.
Explanation:
Specifically, industrial biotechnology uses enzymes and micro-organisms to make bio-based products in sectors such as chemicals, food ingredients, detergents, paper, textiles and biofuels. ... Since that time, industrial biotechnology has produced enzymes for use in our daily lives and for the manufacturing sector.
Does a battery produce electric currents?
Answer:
A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.
Can someone pls help me is for my study guide final?
Answer:
displacement means moving something or the occupation by a submerged body part or part of the body