what are the two
factors in which weight of object depends?
Answer:
An object's weight depends on its mass (the amount of matter it consists of) and the strength of the gravitational pull.
True or False. Can Metalloids conduct electricity under certain conditions?
Answer:
Conduction: Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors. Luster: Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals).
Explanation:
A 8.7kg cart travels down a 18.1m high hill. Determine the final kinetic energy if 100J of
energy is lost to friction.
Answer:
Explanation:
E = mgh
E(final) = E - friction
E(final) = 8.7 * 9.81 * 18.1 - 100 = 1444.8 J
No matter how well we get along with our parents as adolescents, there comes a time when we need to break away and assert our own independence. There are several ways in which we do this, some of them deliberate and intentional and some of them not so intentional. Describe several ways you use or have used to break away from your parents. Briefly describe your parents' reactions.
Answer: I never said anything to them but if i did it would be "I need a break from you, i love you but sometimes I have to find the path on my own." i would say this if i wasn't scared to hurt them.
Explanation:
How does a parallel circuit change when a branch is added?
The total resistance increases, so the current in the circuit decreases.
The total resistance decreases, so the current in the circuit increases.
The total resistance increases, so bulbs shine at a lower brightness.
The total resistance decreases, so bulbs shine at a higher brightne
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what instrument used measure
to volume of water
Answer: A Graduated Cylinder or A Beaker ?
Explanation:
A coconut at rest suddenly explodes into two pieces. no net external force is applied to it.One piece with mass 2m lands a distance d to the right of the starting point. The second piece has mass m. We can ignore air resistance. where dow stew swcond piece land?
Answer:
To the Left
Explanation:
A car moving with uniform acceleration attains speed of 36km/hr in 2 minutes find the acceleration??
Initial velocity of car is 0.
Final velocity of car is 36 km/h.
Time taken to attain final speed is 2 minutes.
To Find:What is the acceleration of car ?
Formula to be used:v = u + at
Solution:First change the final velocity from km/h to m/s and also time to seconds.
[ To change km/h to m/s multiply by 5/18 ]
➙ Final velocity = 36(5/18) = 10 m/s.
[ 1 minutes = 60 seconds ]
➙ 2 minutes = 2(60) = 120 seconds.
Now, we have
v = 10 m/s.
u = 0 m/s.
t = 120 s.
⟹ v = u + at⟹ 10 = 0 + a(120)⟹ 10 = 120a⟹ 10/120 = a⟹ 0.083 m/s² = aHence, the acceleration of car is 0.083 m/s².
__more____info_____➟ The rate of change of velocity is called acceleration. It is denoted by a.
➟ The velocity at which motion starts is termed as initial velocity. It is denote by u.
➟ The last velocity of an object after a period of time. It is denoted by v.
[tex]\boxed{\large{\bold{\blue{ANSWER~:) }}}}[/tex]
Initial Velocity u = 0Final Velocity v = 36 km/hr = 10 m/sTime t = 2 min = 120 secAcceleration a = ?By 1st Equation of motion
we know that,
[tex]\boxed{\large{\sf{v \: = u \: + a \: t}}}[/tex]
according to the question,
[tex]10 = 0 + a \times 120\\\\a \: = \frac{10}{120}\\\\a \: = \frac{1}{12}\\\\a=0.083\: m {s}^{ - 2}[/tex]
Therefore,
Acceleration of the car is 0.083 ms^-2
Setting a time limit can help you achieve your goals. A. True B. False
Answer:
in my opinion i think is it a (true). Because it had helped my brother with school so i think it is true
Explanation:
hi i need to pass this test im being timed please help
Answer:
C
Explanation:
What is an important difference between nanotechnology and microtechnology?
Nanotechnology shows results of quantum mechanics, but microtechnology does not.
Microtechnology shows results of quantum mechanics, but nanotechnology does not.
Microtechnology is used to make products, but nanotechnology is not.
Nanotechnology is used to make products, but microtechnology is not.
Answer:
A) Nanotechnology shows results of quantum mechanics, but microtechnology does not.
Explanation:
Edge 21 test
The difference between nanotechnology and micro technology is nanotechnology shows results of quantum mechanics, but micro technology does not.
What are the differences between micro-technology and nanotechnology?Micro technology:
The technology that can be featured completely in a microscopic scale is known to be micro - technology. This technology that contribute to design, use components, devices that involves in small size. These were done significantly in smaller features.
Nanotechnology:
Nanotechnology is the field of applied science and technology that can be measured through nanoscale. Nanotechnology is helping to considerably improve, industry sectors - information technology, homeland security, medicine, transportation, energy, food safety, and environmental science, among many others.
Thus, Nanotechnology shows results of quantum mechanics but micro-technology does not. Option A is the correct answer.
Learn more about micro and nano technology,
https://brainly.com/question/24723558
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NEED HELP A 400 Ω resistor is connected across 200 V. What current will flow?Single choice.
(2 Points)
0.25 A
0.5 A
2.0 A
4.0 A
Answer: 0.5A
Explanation:
According to Ohm's law, the Voltage(V) when a current flows through a resistor can be calculated by using the formula:
V = IR
where,
V = Voltage = 200V
I = current in amps (A)
R = resistance in ohms (Ω) = 400Ω
Current = Voltage / Resistance
I = V/R
I = 200/400
I = 0.5A
Therefore, the current is 0.5 Ampere
how does current flowing through a resistor affect the temperature
The Universal Space Agency wants to know the results of your Sim investigation. Write your report to the lead chemist, explaining why the staff can smell the chocolate bar. Use evidence from your investigation in your explanation.
Answer:
Condensation can also produce water droplets on the outside of soda cans or glasses of cold water. When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can. When a pocket of air becomes full of water vapor, clouds form.
Explanation:
Un tren va a una velocidad de 18m/s frena y se detiene en 15s calcula su aceleracion y la distancia recorrida al frenar
Answer:
Acceleration is -1.2 m/s² and distance covered is 135 m.
Explanation:
A train going at a speed of 18m / s brakes and stops in 15s calculates its acceleration and the distance traveled when braking
Given that,
The initial speed of the train, u = 18 m/s
Final speed, v = 0
Time, t = 15 s
We need to find acceleration and distance traveled when braking. Let a is acceleration and distance traveled.
Acceleration,
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{0-18}{15}\\\\a=-1.2\ m/s^2[/tex]
Using third equation of motion,
[tex]v^2-u^2=2ad\\\\d=\dfrac{v^2-u^2}{2a}\\\\d=\dfrac{0^2-18^2}{2\times (-1.2)}\\\\d=135\ m[/tex]
Hence, acceleration is -1.2 m/s² and distance covered is 135 m.
Sodium has an atomic mass of 23 and an atomic number of 11, so the
number of neutrons must be_______
Answer here
Answer:
12 Neutrons
Explanation:
So the mass of sodium is 22.990. You round it up to get 23(as stated in the problem). So, what exactly is atomic mass?
Atomic Mass is the total amount of neutrons and protons added up to form a total mass. So when you subtract 23-11 you get 12 Neutrons.
Tip: Don't know if you need this but-
The neutrons and protons are typically close in number (unless it's an isotope). So say that you subtract and the numbers of protons and neutrons aren't close at all. Well if that's the case, it's probably wrong.
hope this helps!!
Which situation would create a field like the one shown here?
A. interaction between two magnetic south poles
B. interaction between two magnetic north poles
C. interaction between a south pole and a north pole
D. interaction between a magnetic south pole and a copper bar
como te llamas?
(nom
Answer: como mi llamo yo?
Explanation: in rlf Maria
Answer:nai
Explanation:
The range of a projectile is the vertical height reached; True or False?
Answer:
False
Explanation:
The range of a projectile is the horizontal height reached
How much gravitational energy does a 65 kg skydiver have 650 m up in the sky?
Answer:
G.P.E = 414050 Joules or 414.05 Kilojoules
Explanation:
Given the following data;
Mass = 65 kg
Height = 650 m
We know that acceleration due to gravity is equal to 9.8m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where;
G.P.E represents potential energy measured in Joules.m represents the mass of an object. g represents acceleration due to gravity measured in meters per seconds square. h represents the height measured in meters.Substituting into the equation, we have;
[tex] G.P.E = 65 * 9.8 * 650 [/tex]
[tex] G.P.E = 414050 [/tex]
G.P.E = 414050 Joules or 414.05 Kilojoules.
A 100kg linebacker runs with a velocity of 5m/s towards an 88kg quarterback, who begins to back up
with a velocity of 2m/s to avoid being sacked
a.What is the momentum of the linebacker-quarterback system?
b.the quarterback is unsuccessful in evading the linebacker and gets sacked. what is the velocity of the football players just after the linebacker dives in for a tackle if the 2 players move as one clump?
An air track car with a mass of 0.55 kg and velocity of 5.8 m/s to the right collides and couples with a 0.45 kg car moving to the left with a velocity of 3.9 m/s. What is the combined velocity of the cars just after the collision?
Explanation:
Given:
m1 = 0.55 kg
m2 = 0.45 kg
vi1 = +5.8 m/a
vi2 = -3.9 m/a
Solve for V
m1vi1 + m2vi2 = (m1 + m2)V
(0.55 kg)(+5.8 m/s) + (0.45 kg)(-3.9 m/s) = (0.55 + 0.45)V
V = +1.46 m/a
This means that the combined mass after the collision is moving to the right at 1.46 m/s
What is the wavelength of sound wave in air that has a temperature of 24.6°C that has a frequency of 440.8 Hz?
A. 465.40 m
B. 0.78 m
C. 17.92 m
D. 0.75 m
A force of 20 newtons is used to much a box a distance of 2 meters. How much work was done?
Answer:
40 J
Explanation:
In the case of a rectilinear movement, the work is calculated as the product of Force (N) * movement (m). In your case, unless the angle between the force vector and the displacement vector is different from 0, the work is:
20 N * 2 m = 40 J
which instrument measure the intensity of sound
Answer:
Decibel Meter
A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure. Often referred to as a sound pressure level (SPL) meter, decibel (dB) meter, noise meter or noise dosimeter, a sound level meter uses a microphone to capture sound.
Answer:
Decibel Meter
Explanation:
A decibel meter is a measuring instrument used to assess noise or sound levels by measuring sound pressure.
A building is 512 m high. What must be the minimum water pressure in a pipe at ground level in order to get water up to a restaurant on the top floor? [3] (Density of water = 1000 kgm-3)
Answer:
The minimum pressure required to get water up to a restaurant on the top floor is 5.0176 x 10⁶ N/m²
Explanation:
Given;
height of the building, h = 512 m
density of water, ρ = 1000 kg/m³
The minimum pressure required to get water up to a restaurant on the top floor is calculated as follows;
P = ρgh
where;
P is the required minimum pressure
g is acceleration due to gravity = 9.8 m/s²
P = 1000 x 9.8 x 512
P = 5.0176 x 10⁶ N/m²
Therefore, the minimum pressure required to get water up to a restaurant on the top floor is 5.0176 x 10⁶ N/m²
What kind of energy was used to move the toy car?
Answer:
kinetic energy
Explanation:
Motors change electrical energy into kinetic energy. The spinning movement of the motor is used to do work, for example, the wheels on a toy car.
Answer:
hope this works
Explanation:
Kinetic energy is defined as the energy of a moving object.
A thrown football, a speeding automobile, a marathon runner, or a rock falling from a cliff, are examples of objects that have kinetic energy.
The liquid pressure exerted in one direction only
Multiple Choice
Which is the best reason to be wary of those you talk to on the Internet?
A. They may not be who they say they are.
B. You don't know where they live.
C. You don't know their favorite foods.
D. They may not be in the same grade as you.