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firstExplanation:take a GUN MAKE it front and BACK then you shoot

40km/hExplanation:AVERAGE speed=total distance/total time=160/4=40km/h

soln: heregiven:initial velocity(u)= 40m/sfinal velocity(v) = 0 m/s  [ the sudden apply of the brake cause the final velocity to be 0.]FORCE APPLIED(f) = 1300 Ntime taken(t) = 4snow,a) change in momentum= be xwe know that,F= change in momentum/timeor, 1300= x/4or, 1300*4 = XSO, x= 5200 kg*m/sb) retardation of the car(a)=a= (v-u)/tor, a= 0-40/4so, a= -10∴ retardation of teh car= 10 m/s^2 [ no need to write -10m/s^2 as retardation already means negative acceneration.]c) the mass of the car=we know that,F= maor, 1300= m* (-10)or, 1300/ (-10)= m∴ mass of the car(m)= -130 kgExplanation:

If the ELECTRIC field is not normal to the surface, it will have a COMPONENT tangential to the surface which will IMMEDIATELY cause the flow of charges, PRODUCING surface current. HOWEVER, no such current can exist under static conditions. Hence electric field is normal to the surface of the conductor at every point..........

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The size of a MOMENT DEPENDS on two FACTORS: the size of the force applied. the perpendicular distance from the pivot to the LINE of ACTION of the force.

the ratio of VOLTAGE and ELECTRICAL CURRENT in a CLOSED circuit is decreases

1 kmExplanation: By SIMPLE tricks Half of 4km/h=2KM/h(it MEAN that 2km in half HRS) &half of 2km/h=1KM/h(it means that 1km in15min)

The RATIO of an OBJECT's MASS to its VOLUME is KNOWN as density.Ratio of mass of an object to its volume - 20068982.

hat radius r=30m and θ=30 o The maximum speed on CAR can be DRIVEN safely ALONG the curve is given by⟹v= rgtanθ = 30×9.8×tan(30 o ) = 30×9.8× 3 1 = 98 3 =13.03m/s

tion:Check the CORRECTNESS of the equation λ = h / mv where λ is the wavelength, h is PLANCK’s CONSTANT, m is mass.yes this equation is correct PLZ mark as brainlist

you have GOOD QUESTIONEXPLANATION:PLS MARK me as BRILLIANT

many working PARTS, the human eye functions MUCH like a digital CAMERA. Here's how it works. Light enters the eye through the cornea, the clear front SURFACE of the eye, which acts like a camera lens. ... Its job is to convert images into ELECTRONIC signals and send them to the optic nerve.

the ANSWER of this question is LIGHTENING ROD at the top of the BUILDING

The force of friction which comes into play when one body SLIDES or TENDS to SLIDE on the surface of ANOTHER body is known as sliding friction.

a) is TH answer EXPLANATION:because REAR mirror used in vehicle is CONVEX mirror

The potential DIFFERENCE is the measure of ENERGY between any two POINTS on the circuit. ... The EMF is the maximum voltage that the BATTERY can deliver whereas the magnitude of the potential difference is always less than the maximum possible value of emf.Explanation:PLZZZ mark me brainlist....

Newton PER coulumbExplanation:this is the full form HOPE it's HELPFUL

contact FORCES are those forces which interacts physically.For example-:I) when the coiled spring is stressed the two ENDS of the spring must be in actual contact with the hands of the person.ii) KICKING of football, PULLING a CART etc.

v stands for velocity of sound, E is elasticity and d the DENSITY, then find x in the EQUATION v= (d/E)XA) 1B) ½C) 2D) -1/2

unit of distance and DISPLACEMENT is the meter [m].this PICTURE is for only knowledge it will make U more clear about distance time GRAPH ,,, did u want full para on distance time graph or more knowledge on it...

tion:Instead of differentiating velocity to find acceleration, integrate acceleration to find velocity. This gives us the velocity-time equation. If we assume acceleration is constant, we get the so-called first equation of motion [1]....constant acceleration.v = V0 + at [1]s = S0 + v0t + ½at2 [2]=v2 = v02 + 2A(s − s0) [3]

tion:The lens is a TRANSPARENT biconvex structure in the eye that, along with the CORNEA, helps to refract LIGHT to be focused on the retina.

ar moving along a straight line with uniform speed, linear speed is constant and for the earth rotating about its own AXIS, spin angular speed about the axis is constant​.Linear speed can be defined as the DISTANCE moved by an object per unit time. However linear speed speed means that the body only moves in one direction and cannot change its direction.Angular speed can be defined how fast the object ROTATES with respect to another point. The earth has two angular motion: The ORBITAL motion and the spin, SINCE in the question it was mentioned that the Earth rotates about its own axis therefore it should have spin angular speed.

lessExplanation:According to Snell's Law:sin rsin i= n1n2=v2v1Rarer medium will have refractive INDEX n2 LESS than refractive index N1 of DENSER medium. Thus, according to the law SPEED will increase when travelling from denser to rarer medium i.e. v2 will be greater than v1.

19newtonExplanation:o.8 as X 12m/s as XX +x is 2xo.8-

The DISPLACEMENT - TIME graph of twobodies & Q are REPRESENTED by ONAND BC repr respectuiely. What is toratio of VELOCITIES olf & Q &ZOBC = 60'& LAOC= 30..isplacement-130o time

string 1m LONG is fixed at one END. Theother end is moved up and down with Frequency15 HZ. Due to this, a Stationary wave withFour complete LOOPS, GETS produced on the string.find the speed of the progressive wave whichproduces the stationary wave. [ condition :- Themoving end is an antinode

If the VELOCITY of an object DECREASES with time, its acceleration is negative. Negative acceleration is called retardation decelerationExplanation:HOPE it HELPS

14.38Explanation:AREA = πr^2Given R = 2.1Then Area WOULD be πr^2 = 3.1415 × 2.14 × 2.14 = 14.38

The point in the CENTER of the sphere from which the mirror was SLICED is known as the center of CURVATURE and is denoted by the LETTER C in the diagram below. The point on the mirror's surface where the principal AXIS meets the mirror is known as the vertex and is denoted by the letter A in the diagram below

We apply paint on IRON articles to prevent them from RUSTING . When we apply paint , it forms an outer COATING which cuts off the SUPPLY of oxygen , water or moisture from the air to the surface and in this way rusting of iron is prevented.

Here is the answer:Explanation:Gravitation or force of gravity is a conservative force which attracts every other BODY in the UNIVERSE with a force which is DIRECTLY proportional to the mass of the body and inversely proportional to the square of the DISTANCE between them. Gravity is the WEAKEST fundamental force. Force of gravity= Gm1m2/r^2.HOPE IT HELPS.

1.83 metreis the HEIGHT of GOAL PORT.

Q1Universal law of Gravitation. It states that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the DISTANCE between them.Q2Mathematical form. ====》 F=Gm1m2/r²Q3 The value of UNIVERSAL gravitational constant in S.I unit. ====>In SI units, G has the value 6.67 × 10-¹¹Newtons kg-2m² Q4=Importance of The Universal Law of Gravitation(a) It binds us to the earth. (b) It is responsible for the MOTION of the moon around the earth.(c) It is responsible for the motion of planets around the Sun. (d) Gravitational force of moon causes tides in seas on earth. I hope it will help you......

I THINK ANSWER is 107 rad/s^2Explanation:

vacuumExplanation:PLS MARK me BRAINLIEST

I REALLY don't UNDERSTAND the questionsnot ABLE to GET this ANSWER