Answer:
296.01 J
Explanation:
From the question,
Q = cm(t₂-t₁)....................... Equation 1
Where Q = quantity of heat, c = specific heat capacity of aluminium, m = mass of aluminium, t₁ = Initial temperature, t₂ = Final temperature
Given: c = 897 J/kg.K, m = 0.01 kg, t₁ = 22 K, t₂ = 55 k
Substitute these values into equation 1
Q = 897×0.01×(55-22)
Q = 897×0.01×33
Q = 296.01 J
Hence 296.01 Joules of heat is required.
Please help me out someone?
A positive test charge is placed between an electron, e, and a proton, p, as
shown in the diagram below. When the test charge is released, it will move
toward
When test charge is released, the charge will move towards the electron placed at point D.
What is charge?The charge is the physical quantity that attracts or repels the other objects when comes into electric field.
The test charge is positive charge. The like charges repel each other and unlike charges attract each other.
So, when test charge is released, it gets attracted towards the opposite charge i.e. electron which is negatively charged.
Thus, the correct answer is D.
Learn more about charge.
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in hydraulic pressure the area of the larger piston is half of the smaller piston.if the force of 4000N is applied on the smaller piston.what is the distance covered by the train ?
Answer:
The distance moved by the train is half the distance moved by the force
Explanation:
Given that the force applied to the smaller piston, F₂ = 4,000 N
The pressure in the area of the larger piston, A₁ = 2 × The pressure in the smaller piston, A₂
∴ A₁ = 2 × A₂
We have;
[tex]\dfrac{A_1}{A_2} = \dfrac{2\cdot A_2 }{A_2} =2 = \dfrac{F_1}{F_2}[/tex]
F₁ = 2·F₂ = 2 × 4,000 N = 8,000 N
F₁·d₁ = F₂·d₂
∴ 8,000 N ×d₁ = 4,000 N × d₂
d₁ = 1/2·d₂
∴ The distance moved by the train is half the distance moved by the force
Why are the oceans movements along the What do ocean waves have in common with the sound and light
Answer:
Oceanic currents an waves are in motion due to energy of wind.
Explanation:
When the wind blows across the ocean water ts creates a pull and push effect. It pulls the top layers of water and creates a frictional drag force that leads to the movement of water molecules and appears that the surface is moving. The movement can be seen in the form of surface oceanic currents and waves that are found through the entire globe. The ocean waves and currents carry with them the energy from one place to another.
What sport was invented by the English?
Answer:Cricket !
The origins of cricket are very vague, and many theories have been put forward suggesting its origins, but it is, without doubt, very English. The first evidence of cricket being played was recorded in the year 1550, by the pupils of Royal Grammar School, Guildford.
Hope this helps ! ✨
A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even without a
direct contact with the liquid. This phenomenon can be explained by:
Answer:
As atoms in the spoon vibrates about their equilibrium positions and transfer energy form one end to other end. This process is called conduction.
To 3 significant digits, what is the period of the pendulum using the equation for the period of a simple pendulum? Hint, the information you need is on the right side of the screen. The equation for the period of a pendulum is: T = 24 V
Answer:
1.42 seconds
Explanation:
T=2*pi*(sqrt length over gravity)
T=2*pi*(sqrt 0.5/9.8)
T=1.4189
Round to 3 significant digits
T=1.42 seconds
PLEASE HELP THIS IS IMPORTANT!
the more mass an object has the more damage it can cause. true or false?
Yes it's true
compare a falling feather vs a falling rock
Answer:
It's true. Mass is directly proportional to force so more mass means more force applied which causes more damage.
A toy car of mass 1kg moves at 2 m/s. If a 3N force is applied for 1.9 seconds. What is the cars final velocity? Answer to 1 decimal. Help fast please. I'll mark brainliest :)
Answer:
7.7 m/s
Explanation:
Initial speed=2 m/s
mv=Ft
1*v=3*1.9
v=5.7 m/s
5.7+2=7.7
2. A child swings back and forth on a swing with no friction or air resistance between points X and Z, as shown. Point Y is the lowest point in the swing, where height is zero. Which of the following is equal to the kinetic energy of the child at point Y?
(A) The kinetic energy of the child at point X.
(B) The kinetic energy of the child at point Z.
(C) The potential energy of the child at point Y.
(D) The potential energy of the child at point Z.
Answer:
c
Explanation:
give the 7 color harmonies
Answer:
Complementary colors.
Split complementary colors.
Analogous colors.
Triadic harmonies.
Tetradic harmonies.
Monochromatic harmonies.
Hahah I look pregnant don’t I
A small 10.0 g ball is held to a slingshot
that is stretched 6.0 cm. The spring
constant is 2.0 × 102 N/m.
a. What is the elastic potential energy
of the slingshot before it is
released?
Answer:
0.36 J
Explanation:
[tex]PE = \frac{1}{2} kx^{2} \\PE = \frac{1}{2} (200 N/m)(0.06 m)^{2} \\PE = 0.36 J[/tex]
An echo returned in 3s. What is the distance of the reflecting surface from the source, given that the speed of sound is 342ms^-1
Answer:
d = 513 m
Explanation:
Given that,
An echo returned in 3s.
We need to find the distance of the reflecting surface from the source, given that the speed of sound is 342 m/s.
The sound will cover 2d distance. The formula for the speed is given by :
v = d/t
So,
[tex]v=\dfrac{2d}{t}\\\\d=\dfrac{vt}{2}\\\\d=\dfrac{342\times 3}{2}\\\\d=513\ m[/tex]
So, the required distance is 513 m.
What 3 things can cause acceleration?
How do mountains affect the climate of a region?
who was the fist man on moon
Answer:
Neil Armstrong
Explanation:
Answer:
Neil Armstrong.
Explanation:
. PLEASE GIVE BRAINLIEST.
1.Una partícula de masa m = 0.2 [kg] está unido a dos resortes idénticos (de longitud L = 1.2 [m]) sobre la parte superior de una mesa horizontal sin fricción. Los dos resortes tienen la misma constante elástica de K = 40 [N/m] y cada uno esta inicialmente en su posición de equilibrio (punto O). Si la partícula se hala una distancia d = 0.5 [m] hacia la derecha y después se suelta (ver figura), ¿cuál es la velocidad cuando pasa por el punto O (posición de equilibrio)?
Answer:
walang kuwento
Explanation:
kasi ma answer ko
How can we use thermal energy to our advantage?
Answer:
One of the primary advantages of thermal power is that the generation costs are extremely low. No fuel is needed to generate the power, and the minimal energy needed to pump water to the Earth's surface can be taken from the total energy yield.
Explanation:
Explanation:
heating system warming homes and other buildings is an abvous way that thermal energy can be used two common types of home heating system are hot water and warm air
static_______
sliding______
rolling_______
fluid_________
Answer:
a car
A sled sliding across snow or ice.
a ball down a hill
mercury
Explanation:
Use appropriate units and significant figures. USE THE LAW OF COSINES AND LAW OF SINES.
You are flying 75.0 mi/hr on a plane heading north with a wind blowing 15.0 mi/hr 46.0° East of North. What is the resultant velocity (your velocity relative to the ground)?
Answer:
The resultant velocity is 86.1 mi/h.
Explanation:
The law of cosines is given by:
[tex] c^{2} = a^{2} + b^{2} - 2abcos(\theta) [/tex]
Where:
c: is the resultant velocity =?
a: is the velocity of the plane = 75.0 mi/h
b: is the velocity of the wind = 15.0 mi/h
θ: is the angle between "a" and "b"
The angle between "a" and "b" can be found as follows:
[tex] \theta = 180.0 - 46.0 = 134.0 ^{\circ} [/tex]
Now, by using the law of cosines we have:
[tex] c^{2} = (75.0)^{2} + (15.0)^{2} - 2*75.0*15.0*cos(134.0) = 7413.0 [/tex]
[tex] c = 86.1 mi/h [/tex]
Therefore, the resultant velocity is 86.1 mi/h.
The law of sines is:
[tex] \frac{a}{sin(\gamma)} = \frac{b}{sin(\alpha)} = \frac{c}{sin(\theta)} [/tex]
Where:
γ: is the angle between "b" and "c"
α: is the angle between "a" and "c"
So, if we want to find "c" by using the law of sines, we need to know another angle besides θ (γ or α), and the statement does not give us.
I hope it helps you!
4) The object that changes its position relative to a fixed point with time is called ..
How much work is done when a person raises a 10 N bag 5 meters off the ground?
Answer:
Work done W = 50 N-m
Explanation:
Given:
Force F = 10 N
Distance s = 5 meter
Find:
Work done
Computation:
Work done is formulated way that it includes both Applied force upon thing and displacement of thing.
W = fs
W = 10 x 5
Work done W = 50 N-m
Alfred is studying a substance that is made out of only one element. This means that
Answer: A pure substance is something that occurs in nature. An element is made up of one type of atom only and cannot be split further. A compound has the combined properties of the elements from which it is made. Atoms show the macro properties of an element.
Plants use sunlight to fuel photosynthesis (the process they use to produce their food). Which of the following is the best description of the energy transformation involved in this process?
Light Energy to Thermal Energy
Light Energy to Chemical Energy
Thermal Energy to Mechanical Energy
Thermal Energy to Chemical Energy
If the half life of a decaying isotope is 10 years, which statement is true after 8 years
Answer:
is suppoesd to say after 20 yrs
Explanation:
Two positive charges of 20 micro coulomb and 100 micro coulomb and the distance between them is 150cm.What will be the electrical force of repulsion between these charges?
Answer:
0.8 N
Explanation:
From coulomb's law,
Formula:
F = kqq'/r²........................ Equation 1
Where F = Force of repulsion, k = coulomb's constant, q = first positive charge, q' = second positive charge, r = distance between the charge.
Given: q = 20 μC = 20×10⁻⁶ C, q' = 100 μC = 100×10⁻⁶ C, r = 150 cm = 1.5 m.
Constant: k = 9×10⁹ Nm²/C²
Substitute these values into equation 1
F = (20×10⁻⁶ )( 100×10⁻⁶)(9×10⁹)/1.5²
F = 1800×10⁻³/2.25
F = 1.8/2.25
F = 0.8 N
Xander reached a final velocity of 4.5 m/s for 3.5 seconds. Finley reached a final velocity of 3.6 m/s for 4.2 seconds. Max reached a final velocity of 7.3 m/s for 1.2 seconds. They all started at the same location from rest. Which lists them from least to most acceleration? Max Finley Xander Max Xander Finley Xander Finley Max Finley Xander Max
Answer:
Finley, Xander and Max
Explanation:
v = Final velocity
t = Time
u = Initial velocity = 0
a = Acceleration
From kinematic equations we get
[tex]v=u+at\\\Rightarrow a=\dfrac{v-u}{t}=\dfrac{v-0}{t}\\\Rightarrow a=\dfrac{v}{t}[/tex]
Xander
v = 4.5 m/s, t = 3.5 s
[tex]a=\dfrac{4.5}{3.5}\\\Rightarrow a=1.29\ \text{m/s}^2[/tex]
Finley
v = 3.6 m/s, t = 4.2 s
[tex]a=\dfrac{3.6}{4.2}\\\Rightarrow a=0.86\ \text{m/s}^2[/tex]
Max
v = 7.3 m/s, t = 1.2 s
[tex]a=\dfrac{7.3}{1.2}\\\Rightarrow a=6.083\ \text{m/s}^2[/tex]
The required list is Finley, Xander and Max.
Answer:
Finley, Xander and Max
Explanation:
Anything that is thrown or shot through the air is called a projectile. A baseball
player in the outfield throws a ball to home plate. What type of path does the projectile follow?
F. a straight line
G. a curved path upwards
H. a curved path downwards
J. a straight line downwards
Answer:
A curve path downwards
Explanation:
When the ball is thrown, it curves downwards because the earth's core is pulling it out of the sky, and alse becasue the earth is round.
Answer:
H. a curved path downwards
Explanation:
Humpty Dumpty (5 kg) is about to a bungee jump from a 50-meter high bridge. Feeling nervous, he paces back and forth with a velocity of 2 m/s. What is Humpty Dumpty's GRAVITATIONAL POTENTIAL ENERGY before jumping?
Answer:
E = 2450 J
Explanation:
Given that,
Mass of Humpty Dumpty, m = 5 kg
He jumps from a 50 m high bridge.
Feeling nervous, he paces back and forth with a velocity of 2 m/s.
We need to find Humpty Dumpty's gravitational potential energy before jumping. The formula is given by :
[tex]E=mgh\\\\E=5\times 9.8\times 50\\\\E=2450\ J[/tex]
So, the required gravitaional potential energy is 2450 J.
A pathogen has entered your body and you become sick. You develop a fever and vomit. This is your body's way of trying to maintain