According to Newton’s first law, if no force acts on an object, it will just continue moving. Explain in terms of Newton’s first law why a car engine must exert a force between the car and the road to drive at a constant speed on a straight and level road.

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A: Voltage of battery (V) = 2.9 VPower (P) = 0.122 W

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Q: A man-made satellite orbits the earth in a circular orbit that has a radius of 21000 km. The mass of…

A: Radius of orbit,R = 21000 km    = 21000 x 103 m   R =  21 x 106 mMass of the Earth, M = 5.97 x 1024…

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Q: If the height of transmitting and receiving antennas are 80 m each, the maximum line of sight…

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A: In a transformer, two coils of  wire are wound around a toriodal iron core, thenfrom the above…

Q: If f(x) + x²[f(x)]³ = 10 and f(1) = 2, find f '(1). f'(1) =

A: This problem can be solved using basic formula of derivatives

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Q: Problem 7: Two vectors in Cartesian coordinates have components A = (3, 2, 3) and B = (4, -1, 7).…

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Q: Your college quadrangle is 82 meters long and 69 meters wide. When you are late for​ class, you can…

A: When the student goes around the edge, the distance covered by him will be:So, the time taken by him…

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Q: what is the velocity of a car that goes 100 miles in one hour and 50minutes?

A: The rate of change of displacement is known as velocity.  Where,V = velocityds = change in…

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Q: A pilot flies with a heading of 160 degrees and an airspeed of 250 km/h. a) how long should it take…

A: The time taken for the pilot to ply to a town 1200km away isthen the time taken is

Q: Q Consider astate >= which — 14₁ > + √= 19₂ > + = 9 > orthonormal eigen state is Bas given interm of…

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Q: Questión 4.5á The figure shows two blocks of wood connected by a light string. The first block has…

A: As you have posted two questions which are completely separate questions actually. So as per our…

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Q: A rock is thrown horizontally with a speed of 18 m/s from a vertical cliff of height 31 m. (a) How…

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Q: 16-An object of mass 50kg hanged in rope as shown. a) What is the tension force in rope A? ( b) What…

A: Here the mass of the block = m = 50kgthree ropes are attached with each other as shown in the…

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Q: Two loudspeakers are separated by 2.5 m. A person stands at 3.0 m from one and at 3.5 m from the…

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Q: nd: H h 2mw (a¹ + a) (ât - â) Fmw p=i√ la ati a¹n(x) = √n+1vn+1(x) √√√n-1(2), if n>0 Ôn(2) = {√ if n…

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Q: Consider a cylindrical solenoid with diameter = d, length = λ, and number of turns of wire = n. If…

A: Diameter (d) = 6.09 cm Length (λ)= 19.40 cm Number of loop (n) = 216 Current ( i ) = 19.8 A

Q: 14. At an amusement park there is a ride in which cylindrically shaped chambers spin around a…

A: This problem can be solved using concept of centripetal force. We are required to calculate the…

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Q: In Olympic archery competitions, the standard distance between the archer and the target is 70m. A…

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Q: In a simple AC circuit, the voltage is 110 VAC at 60 Hz (the American standard) and the resistance…

A: Given that ,voltage is V = 110 VAC frequency is H = 60 hzresistance R = 300 ohm ,Determine the all…

Q: two resistors, R1 = 3.11 Ohms and R2 = 5.59 Ohms, are connected in series to a battery with an EMF…

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Q: conies Two masses 40 kg and 60 kg. are connected by a massless' rope over a as pictured in the…

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Q: 2.1 D A total charge of Q coul is uniformly distributed over the volume of a sphere of 20 cm radius.…

A: We can use Gauss's law to find the electric field intensity in each case. Gauss's law relates the…

Q: Problem 5: A 0.25 kg ball is suspended from a light 1.1 m string as shown. The string makes an angle…

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Q: If the height of transmitting and receiving antennas are 80 m each, the maximum line of sight…

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Q: (a) What is the magnitude of the tangential acceleration of a bug on the rim of a 12.5-in.-diameter…

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A: Write the horizontal component of the initial velocity.Write the vertical component of the initial…

Q: e) 来 I decreasing mm) R ww ww

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Q: In the diagram below each unit on the horizontal axis is 3.00 cm and each unit on the vertical axis…

A: Equipotential lines: The planes have same electric potential can be called as equipotential…

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Q: The electric field at a point P just outside the outer surface of a hollow spherical conductor of…

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Q: Opening a switch in a highly inductive circuit can be dangerous. To see why, consider a 6 V battery…

A: A battery of voltage (V) =6VInitial current (i1) =0After applying 6V, Current (i2) = 3.3AInductance…

Q: U₁= P Part (i) Calculate the numerical value of U,, in J. Part (j) What's the torque tu now? 11

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Q: Question 3 If a squirrel at the top a of tree 5 meters high drops a walnut, how long will the take…

A: Initial height of squirrel h=5 meters gravitational acceleration g=9.8m/s2

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Q: the Bohr model of the hydrogen tom, the electron in the lowest mergy state (ground state) moves with…

A: Speed ( v ) = 2.2 × 106 m/s Radius ( r) = 5.3 × 10-11 m Magnitude of charge on electron       Charge…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!