Answer:
In substances such as iron, cobalt, and nickel, most of the electrons spin in the same direction. This makes the atoms in these substances strongly magnetic—but they are not yet magnets. To become magnetized, another strongly magnetic substance must enter the magnetic field of an existing magnet.
1. Through the law of gravity, Newton showed that two objects attracted by gravity actually orbit
around
Otheir common center of mass.
O the object with more mass.
O the object with less mass.
O the center of the larger object.
PPLEEAASSEEE HEELPP!!!!!
>>Explain how bones help maintain homeostasis. Support your answer with evidence from what you have learned about the structure of bones.
Explanation:
The skeletal system helps maintain mineral homeostasis by regulating the level of calcium and other minerals in the blood by storing or releasing them from bones as needed. Bones also regulate blood glucose and fat deposition through the secretion of the endocrine hormone osteocalcin.
Aluminum allows for the flow of electrons, while glass does not. Would an aluminum wire surrounded by glass be an effective design for a device that will need to carry an electric current?(1 point)
No, it would not. Both aluminum and glass are insulators, so the device would not carry a current.
Yes, it would. The glass would carry the current, while aluminum is an insulator.
Yes, it would. Aluminum is a conductor, and the glass would prevent electricity from transferring to a person holding the device
No, it would not. Both aluminum and glass are conductors, so the current would be exposed to outside elements.
answer
no
Explanation:
I do not think that I would because even though its a conductor in the insulator I think it would insulate it before it will work (not sure if that makes sense)
Aluminum is a conductor, and the glass would prevent electricity from transferring to a person holding the device.
What is meant by a conductor ?A substance or material that permits electricity to flow through it is known as a conductor or electrical conductor.
Here,
When potential difference is provided, electrical charge carriers, often electrons or ions, travel effortlessly from atom to atom in a conductor.
Since aluminium foil is a recognized conductor of electricity, when a charge is given to it, electrons can pass freely through the material.
By allowing electrons to easily move through its structure, aluminium acts as a conductor of electricity. This is feasible because the atoms that make up the structure of aluminium have three valence electrons in their outermost shell, which makes them highly reactive and ideal for carrying electrical currents.
Glass is an insulator.
A material that blocks the movement of electrons is known as an insulator, and as a result, it prevents the flow of electric current.
Hence,
Aluminum is a conductor, and the glass would prevent electricity from transferring to a person holding the device.
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Exam
Messages in the nerve cell are sent down
the
to the synaptic knob.
A. pulmonary vein
B. axon
C. elastic artery
When capacitors are wired in series what must be the same for the two capacitors?.
Answer:The charge on them
Explanation:
When capacitors are wired in series, the charge on each capacitor must be the same.
What are capacitors?Two conductors that are separated from one another and positioned close to one another make up a capacitor, an electrical energy storage device. A parallel-plate capacitor is a simple example of one such storage device.
As each capacitor in the series receives the same amount of current, they all build up the same amount of charge.
Yet, based on the capacitance of each capacitor, the voltage across each capacitor in a series circuit will vary. The following equation may be used to get the voltage between each capacitor:
V = Q/C
Where V is the voltage across the capacitor, Q is the charge on the capacitor, and C is the capacitance of the capacitor.
In a series circuit, the total capacitance is given by the formula:
1/C_total = 1/C₁ + 1/C₂ + 1/C₃ + ...
Where C₁, C₂, C₃, etc. are the series circuit's capacitors' separate capacitances.
So, even if the voltage across each capacitor may vary, the charge on each capacitor in a series circuit must be the same.
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A ball is rolled up a ramp with an initial velocity of +6.0m/s. The ball experiences an acceleration of -2.0m/s^2. How can we determine at what time(s) the ball is +5.0m from its initial position on the ramp?
Apply second equation of kinematics
[tex]\\ \tt\hookrightarrow s=ut+\dfrac{1}{2}at^2[/tex]
[tex]\\ \tt\hookrightarrow 5=6t+\dfrac{1}{2}(-2)t^2[/tex]
[tex]\\ \tt\hookrightarrow 6t-t^2=5[/tex]
[tex]\\ \tt\hookrightarrow t^2-6t+5=0[/tex]
[tex]\\ \tt\hookrightarrow t^2-5t-t+5=0[/tex]
[tex]\\ \tt\hookrightarrow t(t-5)-1(t-5)=0[/tex]
[tex]\\ \tt\hookrightarrow (t-1)(t-5)=0[/tex]
[tex]\\ \tt\hookrightarrow t=(1,5)[/tex]
a ball of mass 3kg moving with a velocity of 4m/s
Answer:
the kinetic energy of the 3kg ball is 6 J
Explanation:
A ball of mass 3kg moving with a velocity of 4 m/s undergoes a perfectly - elastic direct - central impact with a stationary ball of mass m. After the impact is over.
15. The amount of charge that moves through the filament of a light bulb in 4.00
s is 8.00 C. What is the current in the light bulb? *
Answer:
it is the questions of campus level
What is the weight of an object with a mass of 19 kg?
Answer:
Every 2.2 kg is 1 pound. So mulitply 19 * 2.2. It's gonna be equal to 41.8
Explanation:
Statement:
Mass of an object is 19 Kg.
To find out:
The weight of the object.
Solution:
Mass of the object = 19 Kg
Acceleration due to gravity = [tex] \sf9.8 {m \: {s}^{ - 2} }[/tex]
We know, weight = mass × acceleration
Therefore, weight of the object
= (19 × 9.8) N
= 186.2 N
Answer:
The weight of the object is 186.2 N.
Hope you could understand.
If you have any query, feel free to ask.
A car weighs 6000 N on the Earth's surface, what is its weight 3 times
Earth's radius away from the center of the Earth? (N)
Answer:
667 N
Explanation:
[tex]\pink{\frak{Given}}\Bigg\{ \textsf{ A car weighs 6000 N on the Earth's surface.}[/tex]
And we need to find out the weight of the car at a distance equal to 3 times the radius of the earth , from the centre of the earth.
We can find the acceleration due to gravity at a height h from the earth's surface as ,
[tex]\sf\longrightarrow \red{ g_h = g\bigg[ 1 +\dfrac{h}{R_e}\bigg]^{-2}}[/tex]
The height here will be 3R - R = 2R , since 3R is the distance from the centre of the earth .In above equation multiply both sides by m ,
[tex]\sf\longrightarrow mg_h = mg\bigg[ 1 +\dfrac{h}{R_e}\bigg]^{-2}[/tex]
Now here at the place of mg we can substitute 6000N , and mg[tex]_h[/tex] will be the weight at height h which we are interested in finding .
[tex]\sf\longrightarrow W_h = 6000 \bigg[ 1 +\dfrac{2R}{R}\bigg]^{-2}\\[/tex]
[tex]\sf\longrightarrow W_h = 6000 [ 1 + 2 ]^{-2}\\ [/tex]
[tex]\sf\longrightarrow W_h = 6000 [ 3]^{-2}\\[/tex]
[tex]\sf\longrightarrow W_h = 6000 \times \dfrac{1}{3^2}=\dfrac{6000}{9}\\ [/tex]
[tex]\sf\longrightarrow \boxed{\bf Weight_h = 667N \ \ (approx) } [/tex]
The planet Venus has a mass of 4.87 × 10^24 kg, and Earth has a mass of 5.97 × 10^24 kg. How far apart are the two planets when they exert a gravitational force of 1.12 × 10^18 N on one another?
Taking into account the Universal Law of Gravitation, Venus and Earth are separated by a distance of 1,316,302,384 m.
Universal Law of GravitationThe Universal Law of Gravitation establishes that bodies, by the simple fact of having mass, experience a force of attraction towards other bodies with mass, called gravitational force.
The Universal Law of Gravitation states that the gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance that separates them. Mathematically it is expressed as follows:
[tex]F=G\frac{Mm}{d^{2} }[/tex]
where:
G is the universal gravitational constant, with a value of 6.67×10⁻¹¹ [tex]\frac{Nm^{2} }{kg^{2} }[/tex].M and m are the masses of the bodies that interact.d is the distance that separates them.Distance of Venos and EarthIn this case, you know:
F= 1.12×10¹⁸ NG= 6.67×10⁻¹¹ [tex]\frac{Nm^{2} }{kg^{2} }[/tex]M= mass of Venus= 4.87×10²⁴ kgm= mass of Earth= 5.97×10²⁴ kg d= ?Replacing in the Universal Law of Gravitation:
[tex]1.12x10^{18} N=6.67x10^{-11} \frac{Nm^{2} }{kg^{2} }\frac{4.87x10^{24} kgx5.97x10^{24} kg}{d^{2} }[/tex]
Solving:
[tex]1.12x10^{18} N=6.67x10^{-11} \frac{Nm^{2} }{kg^{2} }\frac{2.90739x10^{49} kg^{2} }{d^{2} }[/tex]
1.12×10¹⁸ N÷ 6.67×10⁻¹¹ [tex]\frac{Nm^{2} }{kg^{2} }[/tex]= [tex]\frac{2.90739x10^{49} kg^{2} }{d^{2} }[/tex]
1.678×10 ²⁸[tex]\frac{kg^{2} }{m^{2} }[/tex]= [tex]\frac{2.90739x10^{49} kg^{2} }{d^{2} }[/tex]
1.678×10 ²⁸[tex]\frac{kg^{2} }{m^{2} }[/tex]× d²= 2.90739× 10⁴⁹ kg²
d²= 2.90739× 10⁴⁹ kg²÷ 1.678×10 ²⁸[tex]\frac{kg^{2} }{m^{2} }[/tex]
d²= 1.73265 m²
d= √1.73265 m²
d=1,316,302,384 m
Finally, Venus and Earth are separated by a distance of 1,316,302,384 m.
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A boat heads north in still water at 4. 5 m/s directly across a river that is running east at 3. 0 m/s. What is the velocity of the boat with respect to earth?.
Answer:
5.
i am not sur
bcoz i am giving thos answer only for points
The average mass of a rhinoceros calf is 45 kg. What is its weight in newtons? Round your answer to the nearest whole number. 5 N 45 N 250 N 441 N.
Answer:
441 [N].
Explanation:
Weight=mass*g, where mass=45; g=9,8.
Weight=45*9.8=441 [N].
______ can occur when water-saturated soil turns from a solid to a liquid as a result of an earthquake.
While watching a planet orbiting a star, you notice that the doppler shift in the light of the star is becoming increasingly blueshifted. What must be happening to cause this?.
Answer:
The star must be moving "closer" to the earth because the wave fronts that are being emitted are shifted toward the blue end of the spectrum (they are closer together)
Study the image below. Match the term with the label on the image.
Southern Hemisphere [ Choose ]
Northern Hemisphere [ Choose ]
North Pole [ Choose ]
South Pole [ Choose ]
Equator [ Choose ]
What do the arrows in this photograph represent?
Answer:
The answer would be D) gravity and air resistance.
An action-reaction force air
i did this test today
A car is approaching a stoplight. When the car is 200 m from the stoplight, the light turns yellow. The driver now has three seconds to either come to a stop, or hurry through the intersection before the light turns red. The car's initial velocity is 50 m/s, and it can accelerate at a maximum of 8 m/s^2. Determine if the car can make it through the light.
Apply third equation of kinematics
[tex]\\ \tt\hookrightarrow v^2-u^2=2as[/tex]
[tex]\\ \tt\hookrightarrow (50)^2=2(200)(8)[/tex]
[tex]\\ \tt\hookrightarrow 2500=16(200)[/tex]
[tex]\\ \tt\hookrightarrow 200=2500/16[/tex]
[tex]\\ \tt\hookrightarrow 200>156.25[/tex]
Unfortunately the car cannot make it through
Answer:
No. The car could not make through the light.
Explanation:
initial velocity is 50 m/scan acceleration to 8 m/s²Needs to cover 200 metres or more.Has 3 seconds.Formula: [tex]s=ut+\frac{1}{2} at^{2}[/tex]
where s is displacement, u is initial velocity, a is acceleration, t is time
Using the formula:
Distance: 50 * 3 + 1/2 * 8 * 3²
: 186 meters
The car could not make it through.
The volume and shape of a solid could be changed by
Answer: The volume and shape of a solid could be changed by force.
Explanation: Solids can only change their shape by force, as when broken or cut.
Answer:
force
Explanation:
2
ard
1 point
Jeff is out in the woods, trying to heat 0.5 kg of water to make sure it is safe to drink. He knows from his survival handbook that he needs to add
157.125 kJ of heat to the water in order to make it safe. What is the change in temperature that the water will experience after that heat is added?
(Note: Water has a specific heat of 4,190 J/kg°C.)
1
The temperature change is 75 degrees.
What is specific heat capacity?The specific heat capacity of a substance is the amount of heat added to a substance in order to make the temperature of 1 Kg of the substance to rise by 1 degree.
We know that;
H = mcdT
Where;
H = heat added
m = mass of water
c = heat capacity of water
dT = temperature change
So;
157.125 × 10^3 = 0.5 × 4,190 × dT
dT = 157.125 × 10^3/0.5 × 4,190
dT = 75 degrees
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2. What is a vector measurement?
A. A measurement that needs magnitude only.
B. A masurement that needs direction only.
C. A measurement that needs magnitude and direction.
D. A measurement that needs magnitude and distance.
Answer:
Vector is a measurement that refers to both the magnitude of the unit and the direction of the movement the unit has taken.
just one question. please help, thank you!!!
only answer if you are sure :)
I will give you stars or hearts or whatever you want lol
Answer:
Answer 5: Tension
Answer 3: Compression
Answer 4: Example 2
Answer 2: Oceanic Crust and Continental Crust
Answer 1: Continental Crust
Explanation:
What term refers to the part of a spacecraft that is occupied by the crew for takeoff and landing?
command module
annum module
service module
lunar module
electric field lines point in the opposite direction WHAT charges would move if they were in the field
Answer:
Negative
Explanation:
hope i helped
Which objective lens will give you the greatest resolving power.
Answer:
it depends. pick the one that seems to be right then look it up online then u can see if the answer is familiar. it might not be the exact same answer but u will mostlikely get a hint. thats what i usually do.
Explanation:
What important component is still scarce for American manufacturers, which had 40 days' worth before the pandemic but only had a median of 5 days' worth in 2021?
Answer:
Microchips
Explanation:
Right now we are in a chip shortage because we do not have enough silicon wafers to make the chips and not enough manufacturers to build them.
Groundwater is water that runs ___________ the ground.
Which has more momentum, a 1000 kg car moving 1 m/s or a 70 kg person sprinitng at 8 m/s.
Answer:
a car moving 1m/s
Explanation:
momentum is the product of mass and velocity
mathematically:
p = m . v
the car has a greater momentum since it's product of mass times velocity is greater than the person's.
To do this just substitute your given values for the car and person to determine the answer
Greg built a new skateboard. After testing prototypes multiple times and collecting evidence, Greg advertises that his board can withstand 2000 newtons of force without breaking.
Which of the following ways of presenting this evidence would be the most useful for demonstrating that the device works as he says it does?
A.
by writing a list of the materials from which the prototype is built
B.
by showing photographs of different people riding the skateboard
C.
by showing graphs or charts that contain data from the design tests
D.
by writing an essay describing tricks he performed on the skateboard
Hi✨
also was it A?
Apparently I need twenty characters so✨
Which activity directly converts energy from the sun?.
