6 A textbook sitting on a table weighs 3.6 N. If you push straight down on the book with a force of
84 N. what is the force acting on the book?
which force requires contact?
A. The force exerted by air as an object moves through it
B. The force produced by interactions between electronically charged objects
C. The forced produced by interactions between magnetic objects
D. The force of attraction between two masses
Answer:
A
Explanation: A is a example of Air resistance force, which is a contact force.
A 55 kg skier is at the top of a slope. The vertical distance between start and finish is 10m. (a) What is her Potential Energy? (b) How fast is she moving at the bottom of the hill?
Explanation:
Given that,
Mass of a skier, m = 55 kg
The vertical distance between start and finish is 10 m.
(a) The potential energy of a skier is given by :
[tex]E=mgh\\\\E=55\times 9.8\times 10\\\\=5390\ J[/tex]
(b) When she reaches the bottom of the hill, the potential energy is converted to kinetic energy. So,
[tex]5390=\dfrac{1}{2}mv^2\\\\v=\sqrt{\dfrac{2\times 5390}{55}} \\\\v=14\ m/s[/tex]
Hence, her potential energy is 5390 J and at the bottom of the hill she is moving with a speed of 14 m/s.
This pendulum is at
minimum displacement
maximum displacement
equilibrium
Answer:
EquilibriumExplanation:
The pendulum is at rest ( or balance due to the equal action of opposing forces).
Answer:
Equilimbru or maximum displacement is question.
Will mark Brainliest it's due TODAY PLEASE HELP ME
Explain how UY Scuti and J0523 are different.
Why will J1311 (the Black Widow Pulsar) eventually find itself without its companion star? How will this happen?
How did scientists determine SM0313 is the oldest star ever discovered?
What characteristics of HV2112 make it the best candidate to be classified as a Thorne-Zytkow object?
How does a star's mass determine its lifespan?
Discuss the characteristics of cool red dwarf stars, including their mass and age.
Discuss the correlation or connection between stars with a higher mass and the amount of fuel they have to work with.
How old is the sun and since its birth, how has the sun changed?
During its lifespan, what characteristics of the sun will change?
Answer:
(3rd Question about the Black Widow Pulsar)
J1311 is a fast spinning neutron star, which means it emits strong beams of radiation from it's poles.
As the beam of the pulsar sweeps across the surface of the companion star, it heats it up and blows its material outward into space, thus decreasing its mass.
What do microorganisms get from soil? What do microorganisms give to soil?
Answer:
Organic matter decomposition serves two functions for the microorganisms, providing energy for growth and suppling carbon for the formation of new cells. ... Dead plant residues and plant nutrients become food for the microbes in the soil
Explanation:
A new compound has just been developed. Its formula is: C17H2ON4NaOgP.
How many different elements make up this compound?
A 8
B 7
C6
D 32
Answer:
B- 7
Explanation:
its how many elements, you don't need the amound of each element. you have to count the number of capitalized letters. Hope this helps!
A cat yaks a fur ball outward from the edge of a flat roof. The fur ball lands 0.75 s later on the ground a horizontal distance of 1 m away from the edge of the roof. What was the horizontal velocity of the fur ball?
The horizontal velocity : vox = 1.33 m/s
Further explanationGiven
time 0.75 s
distance = 1 m
Required
the horizontal velocity
Solution
vox = horizontal velocity
x = distance
Can be formulated :
x = vox . t
Input the value :
1 m = vox . 0.75s
vox = 1 : 0.75
vox = 1.33 m/s
What characteristic of sound is most closely related to its frequency?
A. Quality
B. Amplitude
C. Speed
D. Pitch
Answer:
The loudness of sound is most closely related to
The pressure within a sound wave determines the loudness of the sound. In this lesson, learn how to calculate the sound pressure level of a sound wave and what this measurement represents.
Explanation:
what is the amount of time for one cycle to to occur
Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle
[tex] \\ [/tex]
Hope It Helps!
Explain What the core muscles do and why it's important to have a strong set of core muscles.
Answer: Core muscles protect the spine and keeps it stabilized. Also they can help control movements such as walking and standing. The core helps transfer energy and help us move in different directions. It's important to have a strong set of core muscles.
Explanation:
Answer:
The core muscles stabilize and protect the spine. They help control all movements and make it possible for us humans to walk and stand up right. The core helps us transfer energy, shift our body weight and reach/move in different directions. It is important to have a strong set of core muscles because it makes everyday activities easier.
Explanation:
Why do our eyes see the color red when we look at a tomato?
A. Tomatoes emit red light.
B.Tomatoes reflect red light and absorb green and blue light.
C. Tomatoes absorb red light and reflect green and blue light.
D. Tomatoes reflect all colors of light, but our eyes only absorb red light,
Answer:
B. Tomatos reflect red light
Explanation:
The only reason colors exist is because the objects with color reflect all other light except for what they are portrayed as. White reflects all colors, and black absorbs all colors.
If you have any questions feel free to ask :)
Answer:
Explanation: the pigment atoms in the skin absorb photons of all energies except those that correspond to red wavelengths of light, which they reflect back to your eye.
B is more likely the answer
Question 7 of 10
In terms of a story's ending, what is a "twist"?
A. To have the characters become lost on a winding road or path
B. To weave together different fictional elements in a specific pattern
C. To write an ending that is too random for the reader to be satisfied
D. An event that a reader probably wouldn't have been able to predict
SUBMIT
Answer:
D
Explanation:
a twist is an event that a reader probably wouldn't have been able to predict
I NEED HELP ASAP!!
What is the path of a projectile (in the absence of friction)?
a.
a wavy line
b.
a parabola
c.
a hyperbola
d.
Projectiles do not follow a predictable path.
Please select the best answer from the choices provided
A
B
C
D
Answer:
Your answer should be B. a parabola.
Explanation:
The path of the projectile in the absence of friction is a parabola. Therefore, option (b) is correct.
What is the projectile motion?Projectile motion can be described as a form of motion experienced by a projectile that is projected near the surface of the earth and moves along a curved path under the action of gravity. This curved path is to be a parabola, but may also be a straight line in special cases when the projectile is thrown directly upwards.
The study of such motions is known as ballistics and the only force that is actively exerted is gravity, which acts downward, thus giving the object a downward acceleration toward the Earth’s center of mass.
No external force is required to maintain the horizontal velocity component of the object's motion because of the object's inertia. Other forces, such as aerodynamic drag or internal propulsion need additional analysis.
Therefore, the path of an object or projectile is generally parabola in the absence of friction.
Learn more about projectile motion, here:
https://brainly.com/question/11049671
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Es aquel tipo de pensamiento que surge en un proceso individual, personalizado, fomentado por la indagación y el cuestionamiento.
Answer:
Pensamiento crítico.
Explicación:
El pensamiento crítico es ese tipo de pensamiento que surge en un individuo o en un proceso, fomentado por la indagación y el cuestionamiento. Desde el punto de vista de un estudiante, el aprendizaje basado en la indagación se centra en investigar un problema utilizando un método científico. En este tipo de aprendizaje, el razonamiento se realiza a la luz de la evidencia y se resuelve el problema para extraer una conclusión, la cual debe ser defendida mediante un razonamiento fuerte. Este tipo de indagación ayuda al individuo a aprender cosas nuevas.
Identify each part of this chemical equation that describes the burning of methane and oxygen. B (blue box): D (number): E (purple box):
Answer:
The correct answer is -
A (the entire green box): Chemical Equation
B (the blue box): Reactants
C (the arrow): Reacts to Form
D (the number): Coefficient
E (the purple box): Products
Explanation:
The chemical reaction of burning methane and oxygen is as follows;
Here, the green part A is the chemical equation that includes various parts that are reactants B, methane, and oxygen, C is an arrow that indicates the formation of products.
2 is here coefficient that indicates the moles of the oxygen which forms carbon dioxide and water in box E is products
Answers:
A (the entire green box): chemical equation
B (the blue box): reactants
C (the arrow): reacts to form
D (the number): coefficient
E (the purple box): products
Explanation:
As seen in the picture below,
Energy balance worksheet
internal diameter of a test tube
Answer:
16 mm with 14 mm inside diameter.
4. A force of 6.0 Newtons is applied to a block at rest on a horizontal frictionless surface over a 7.0 meter span. How much energy is gained by the block?
Answer:
42 Joules
Explanation:
Given that a force of 6.0 Newtons is applied to a block at rest on a horizontal frictionless surface over a 7.0 meter span. How much energy is gained by the block?
The parameters given are:
Distance covered = 7.0 m
The force = 6.0 m
The formula for work done is the product of force and distance. That is,
Work done = force × distance
Where work done is the same as energy.
Energy = force × distance
Energy = 6 × 7
Energy = 42 Joules.
Therefore, the energy gained by the block is 42 Joules.
Energy is...
a. motion
b. stored power as heat
c. power
d. the ability to do work or cause change?
Answer:
c
Explanation:
Answer:
it's d
Explanation:
because if you had energy you could do anything but without energy you won't be able to so anything
hope this helps
Explain why you have to close the switch in order for the electromagnet to pick up any paperclips.
To start the magnetic field
The half-life of radium-226 is 1600 years. How many
grams of a 7 g sample will remain after 3200 years?
SHOWALL STEPS TO SOLVE THE PROBLEM
Answer:
1600 years half life
3200/1600 is 2 half lifes
first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount
so 1/4*7gm is 1.75gm
Explanation:
Which of the following is not true about vitamins?
A. Vitamins assist in forming bone and tissue.
B. Vitamins are only found in plants.
C. Vitamins help your cells function properly.
D. Vitamins help the body use proteins, carbohydrates, and fats.
in a series connection of bulbs,if one bulb fails.why do all other bulbs go off
Answer:
Because in series, current flow through a single path only as it is same. Hence,if one fails the entire circuit breaks and other bulbs are switched off.
Explanation:
Which method of popcorn popping transfers heat into the kernels without any direct
contact (nothing hot touched the kernels)? Explain.
Answer:
It is cause by radiation that's the answer
Explanation: the heat project sun rays towards the popcorn which causes it to pop
2) If you have a saran wrap that has a neutral charge how many excess electrons does it have?
Zero, neutral means no extra electrons.
Help ASAP please ASAP
Answer:
the anwser you are looking for is B
Explanation:
14. A group of students tested different materials in an electric circuit. The table shows the results of their experiment.
Which conclusion is supported by the evidence shown?
A. Students 4 and 5 tested materials that are conductors of electricity.
B. Students 3 and 6 tested materials that are conductors of electricity.
C. Students 3 and 6 tested materials that are insulators of electricity.
D. Students 1 and 2 tested materials that are conductors of electricity.
Answer: There is no pic homie
Explanation:I am on the same question, so I can’t help :(
What is the weight on Earth of a girl with a mass of 32 kg (F = ma)?
Answer:
~ 314 N
Explanation:
F = ma
= 32 ( 9.81) = ~ 314 N
A horizontal net force F is exerted on a 2.0 kg object at rest. The object starts at I = 0 m and travels
4.0 m along a horizontal frictionless surface. The net force F as a function of the object's position is
shown below.
Force (N)
40+
30
20-
10+
Position (m)
2
3
4
5
6
7
What is the velocity of the object?
Answer:
It’s 12 m/s
Explanation:
Khan approved
A horizontal net force F is exerted on a 2.0 kg object at rest. The object starts at x = 0 m and travels 4.0 m along a horizontal frictionless surface. The net force F as a function of the object's position x is shown below.
What is the velocity of the object?
Answer: 12 m/s
