Explanation:
Relative density of mercury = 13600 Kgm-3/1000 kg m-3 = 13.6.
Name the different forms of energy.
1.Chemical energy
2.Electrical energy
3.Radiant energy
4.Mechanical energy
5.Thermal energy
6.Nuclear energy.
Answer:
thermal energy is the different forms of energy
What is the Unit Of Electric current and Who is the Unit named after??
Pls help Asap
Answer:
Amperes
Explanation:
It is named after a French physicist André-Marie Ampère.
HOPE THIS HELPED
The unit of electric current is Ampere, and it is named after the French physicist André-Marie Ampère (1775 - 1836).
Hope it's helpfulunder what condition do the values of gravitational force and gravitational constant become same or equal
Answer:
The values of gravitational force and gravitational constant become same or equal when product of masses involved equals the square of distance between them.
A box is 300 kg & it covers the area of 150 m2 find the pressure exerted by the box in the ground.
Answer:
If we assume that the box is a cube with 150 m² surface area
Area of 1 face = 150 m² / 6 = 25 m²
The box will exert a downward force of
Force = mass * acceleration due to gravity
Force = 300 kg * 9.81 m/s² N
Force = 2943 N
The box exerts a pressure ( force / unit area) = 2943 N / 25 m²
Pressure = 117.7 N/m²
Thank you, if you found this helpful please comment.
Waves are created on the surface of water when we drop a stone into it. Similarly you must have seen the waves generated on a string when both its ends are held in hand and it is shaken. Light is also a type of wave called the electromagnetic wave. Gamma rays, X-rays, ultraviolet rays, infrared rays, microwave and radio waves are all different types of electromagnetic waves. Astronomical objects emit these waves and we receive them using our instruments. All our knowledge about the universe has been obtained through these waves. Gravitational waves are a very different type of waves. They have been called the waves on the fabric of space-time. Einsteine predicted their existence in 1916. These waves are very weak and it is very difficult to detect them. Scientists have constructed extremely sensitive instruments to detect the gravitational waves emitted by astronomical sources. Among these, LIGO (Laser Interferometric Gravitational Wave Observatory) is the prominent one. Exactly after hundred years of their prediction, scientists detected these waves coming from an astronomical source. Indian scientists have contributed significantly in this discovery. This discovery has opened a new path to obtain information about the Universe. i. Which type of wave a light ray is ? (1 marks) ii. What type of rays are Gravitational waves called ? (1 marks) iii. Why are the gravitational waves difficult to detect ? (1 marks) iv. Give any four examples of electromagnetic waves.
Answer:
gdfhf
Explanation:
jjjjcjbwwfbooob#kkkkkkkki!vdvdiiiiiibl#dnqljuwhgeyehrhrygrgdyhehegegeggegegegeegegegevegwgegegegsjkegsygegdydheheyrteeeudgeedyeyrf1.
On a fishing trip you catch a bass, a rock cod, and a salmon with masses of 1.07 kg, 6.0 kg, and
6.05 kg, respectively. What is the total mass of your catch with the proper number of significant
figures?
The total mass of your catch is 13.1 kg
Since you have three fishes a bass, a rock cod, and a salmon with masses of 1.07 kg, 6.0 kg, and 6.05 kg, respectively,
The total mass of your catch = mass of bass + mass of rock cod + mass of salmon
= 1.07 kg + 6.0 kg + 6.05 kg
= 13.12 kg
Since the total mass of your catch is 13.12 kg and we have three catches with two catches to two decimal places and one catch to one decimal place.
We cannot have more decimal places in our answer than the number of decimal places in the number with the least number of decimal places.
Since the least number of decimal places is in the mass of the rock cod which is 6.0 kg, the total mass of our catch is thus 13.1 kg to one decimal place.
So, the total mass of your catch is 13.1 kg
Learn more about significant figures here:
https://brainly.com/question/17343107
Which statement describes the motion of a ball as it drops onto a vertical spring?
a. The acceleration of the ball decreases as the spring shrinks.
b. The accIleration of the ball decreases as the spring extends.
c. The velocity of the ball changes from positive to negative as the spring shrinks.
d. The velocity of the ball changes from negative to positive as the spring extends.
Answer:
F = M a Newton's second law
F = - K x force exerted by compressed spring
a = - K x / M
a) is true because the ball originally is accelerated due to gravity and this acceleration will decrease as the spring in compressed
One could argue for (d) if the downward direction was designated as negative
Prior to maximum compression of the spring the velocity would negative and as the spring began to extend (and the ball began move upward) the velocity of the ball would change from negative to positive
what is mean mechanical advanteg
Answer:
The ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine is called mechanical advantage.
2 ways that angular and linear momentum are alike and different
Answer:
Angular momentum is inertia of rotationmotion. Linear momentum is inertia oftranslation motion. The big difference is that the type of motion which is related to each momentum is different.
a.
1
S = ut +
1/2
at2
i. u as subject.
Answer:
[tex]s = ut + \frac{1}{2} at^{2} \\ ut = s - \frac{1}{2} a {t}^{2} \\ u = (s - \frac{1}{2} a {t}^{2} ) \div t \\ u = (s - \frac{1}{2} a {t}^{2} ) \times \frac{1}{t} \\ \\ u = \frac{s}{t} - \frac{1}{2t} a {t}^{2} \\ \\ u = \frac{s}{t} - \frac{1}{2} at \\ [/tex]
I hope I helped you^_^
Which statement is true?
A. When a gas condenses to a liquid, it absorbs energy.
B. When water boils, it releases energy.
C. When ice melts, it absorbs energy.
D. When water freezes, it absorbs energy.
Explanation:
The correct answer is option B
Answer:
C. When ice melts, it absorbs energy.
Explanation:
When ice melts, it is getting hotter by absorbing energy and changes from a solid to a liquid. This is an endothermic reaction.
a leaver raised 500N lode using 200N effort. if load distance and effort distance are 20 cm and 60 cm respectively, calculate mechanical advantage, velocity ratio and efficiency of this lever.
Answer:
Ans:
Explanation:
MA=L/E=500N/200N=5/2
VR=ED/LD=60cm/20cm=3
Thus, Efficiency=(Ma*100%)/VR=83.34%
The quantity of matter inside the body is?
Answer:
MASS
Explanation:
mass is the quantity of matter contained in the body.
A crane can lift 5000 kg mass to the height 10m in 10 sec. What is its power?
Answer:
49.050 KW
Explanation:
work done = PE
= mgh
=5000×9.81×10
=490500J
power = workdone/Time taken
= 490500/10
= 49050 watts
= 49.050kW
How do you use a Beam Balance???
Your answer is in the attachment . Hope this helps.
what is the total number of natural element ?
Answer:
94
Explanation :
Of these 118 elements, 94 occur naturally on Earth. Six of these occur in extreme trace quantities: technetium, atomic number 43; promethium, number 61; astatine, number 85; francium, number 87; neptunium, number 93; and plutonium, number 94.
source: Wikipedia
What is 2.34x10^3x5.1x10^-2 in significant figures.
Answer:
5 significant figures
Explanation:
As the question does not state any term in 'significant figures', I will provide the number and the number of significant figures.
First of all, the number. 2.34 × 10³ = 2340, and 5.1 × 10^-2 = 0.051, therefore. 2340 × 0.051 = 119.34.
This will be equal to 5 significant figures.
Help with these please
Answer:
I'll just give short and simple explanation .
Explanation:
when the distance between the masses are doubled but the masses remain the same then,
the gravitational force between two masses decrease by four times when the distance between them is doubled.
hope this helped you
any confusion then comment it.
What is the kinetic energy of a 500kg car traveling 50m/s
Answer: 625000 J
Explanation:
KE= (1/2)mv^2
m=500kg
v=50m/s
KE= (1/2 )(500)(50)^2
= 625000 J
explain buoyancy in one sentence
Answer:
the tendency of a body to float or to rise when submerged in a fluid testing an object's buoyancy.
Explanation:
The meaning is from Merriam Webster for more such unique nd it also has easy meanings you can download that
(Source Merriam Webster)
Hope it helps unnie
Mark me as Brainliest plz!
Have a nice day
Anything that displaces fluid is acted on by an upward force equal to the weight of the displaced fluid.
A student has a block that has a volume of 150 cm3 and a density of 30 g/cm3
Answer:
mass of block = 4500g
Explanation:
density = mass/volume
mass = volume x density
= 150 x 30
= 4500 g
plz and I don't know this plz help me
Answer:
Newton
it is derived of mass and displacement
Right hand rule exercise
1. A wire in a magnetic field is acted on by a force into the plane of the page as shown
below.
F
What is direction of current induced in the wire?
A) Downwards
B) Upwards
2. A wire in a magnetic field is acted
busforce
Answer:
A yxiigxih5dd8yixc99uf8g
S=1/2(u+v)t
i. u as subject
ii. V as subject
Answer:
i. [tex]u=\frac{2s}{t}-v[/tex]
ii. [tex]v=\frac{2s}{t}-u[/tex]
Explanation:
i.)
[tex]s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-v=u[/tex]
ii.)
[tex]s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-u=v[/tex]
help me i dont understand
Answer:
B
Explanation:
At the highest/maximum point the vertical velocity is zero because as the projectile is launched it eventually changes direction. At this instant it momentarily stop causing the maximum velocity to be zero.
hopefully this makes sense
:)
Weigt A box sitting still on the ground by itself has a weight of 700N, what is the mass? (gravity's acceleration is 9.80 m/s2)
Using newtons law
[tex]\\ \rm\longmapsto F=ma[/tex]
[tex]\\ \rm\longmapsto m=\dfrac{F}{a}[/tex]
[tex]\\ \rm\longmapsto m=\dfrac{700}{9.8}[/tex]
[tex]\\ \rm\longmapsto m=71.4kg[/tex]
why knowledge of measurement is important for everyone.
Here are some basic SI units .
Temp-Kelvin(K)Mass-KgDistance=meter(m)Force-Newton(N)If a neutron’s relative mass is listed as 1, what would be the relative mass of a proton and an electron?
Answer:
The relative mass of the proton would be 1 and that of the electron
would be about 1/1840.
Motion is generally defined as an increase in distance
Answer:
motion is the act of changing location or position
Answer:
Motion is generally defined as an increase in distance with respect to time.
Without time it can't be said in motion_________at any particular point in a liquid is _________ in all directions
Answer:
Pressure at any particular point in a liquid is transmitted in all directions
Explanation:
I hope you like my answer and my answer helped you .