A.) Using the alternate form of Newton's second law, compute the force (in N) needed to accelerate a 1,170 kg car from 0 to 30 m/s in 20 s. The change in momentum is the car's momentum when traveling 30 m/s minus its momentum when going 0 m/s. (Enter the magnitude.) ________ N   B.) A runner with a mass of 78 kg accelerates from 0 to 8 m/s in 4 s. Find the net force on the runner using the alternate form of Newton's second law. ________ N

Q: The makers of a certain automobile advertised that their car could accelerate from 15 miles per hour...

A:

Q: A 10-cm-diameter, 1.0-m-long solenoid is wound with 2000 turns of superconducting wire. When the mag...

A: Given DataN=200 turnsd=10cm=0.1mR=0.05mr=R2=0.0250m{considering the loop radius}L=1m∆t=2.5sE=7.5×10-...

Q: Find the index of refraction in a medium in which the speed of light is 2.20  108 m/s.

A:

Q: Taking the wavelength of first Balmer line in hydrogen spectrum (n = 3 to n = 2) as 660 nm, the wave...

A:

Q: A 200 Kg bus sppeds along at 56 mph. The coefficient of friction between the tires and road is 0.8 i...

A:

Q: A battery is connected to a wire, and makes a current in the wire. Which of the following changes wo...

A: We know that, From ohm's law V= I R Where V is the applied voltage  I is the current through the wir...

Q: 1. A U-tube contains liquid of unknown density. An oil of density 780 kg/m³ is poured into one arm o...

A: Density of oil σ=780 kg/m3, height of oil column h=11.5 cm and the distance between oil-air interfac...

Q: A huge spherical helium filled ballon painted to look a cos is prevenetd from floating upward by a r...

A:

Q: please solve with all steps

A: According to Kirchhoff first law Algebraic sum of current at a junction is always zero. According to...

Q: In the figure, V = 9.0 Volt, C1 = C2 = 30.µF, and C3 = C4 15µF. (a) What is the charge on capacitor ...

A:

Q: A heat engine is involved with exchange of heat of 1915 J, - 40 J, +125 J and - Q J, during one cycl...

A:

Q: 4. A raft is made of 12 logs lashed together. Each is 30.5 cm in diameter and has a length of 6.00 m...

A:

Q: An automobile accelerates at a constant rate of 15 mi/hr to 45 mi/hr in 15 seconds, while travelling...

A: Given data:  Initial velocity (Vi) = 15 mi/hr Final velocity (Vf) = 45 mi/hr Time (t) = 15 s Require...

Q: A light ray is incident on the outer surface of the polyethylen at an angle of 46.3° with the normal...

A:

Q: A capacitor of capacitance C' and resistors or resistance R are connected in series as shown in the ...

A:

Q: A plastic cube (density 852 kg/m°) has side length 1.22 jar of maple syrup (density 1199 kg/m3)-you ...

A: GivenDensity of plastic cube, ρc=852 kg/m3Side length ,a=1.22 cm=0.0122 mDensity of maple syrup, ρs=...

Q: A stone sphere is allowed to float downwards in a lake. Before the object's speed reaches terminal v...

A: Terminal velocity is the maximum velocity attainable by an object as it falls through a fluid. it oc...

Q: A 4Kg objéct at rest on the ground is pushed by a force for 8 m. The object ends up going 4 m's. Wri...

A:

Q: A small, 2.00-g plastic ball is suspended by a 20.0-cm- long string in a uniform electric field as s...

A:

Q: A supersonic jet flying at 20 m/s is accelerated uniformly at a ráte of 23.1 m/s* for 19 seconus (a)...

A:

Q: An electromagnet has a coil 0.0500 m long with 430 loops. If 7.50 A of current flows through the coi...

A:

Q: If the velocity of blood flow in the aorta was (m/s 0.32), what pulse frequency would you expect if ...

A:

Q: Problem 2. A ball is dropped down a well and 5 seconds later the sound of the splash is heard. If th...

A: t=5 secvs=330 m/s

Q: Convex Lenses When an object is placed at a distance d, from a lens of focal length f, and d, is gre...

A:

Q: A train travelling at 20 m s accelerates at 0.5 m s2 for 30 s. How far will it travel in this time ?

A: Given data :                Initial velocity =  u                Time  =  t                 Accelera...

Q: What amount of voltage is present across capacitor #2 (C2)?   Select one: a. 6.36 volts b. 4.8 vol...

A:

Q: An electron with a charge of -1.6 x10-19 C provided by the electron gun inside the TV, enters a regi...

A:

Q: questions with the given circuit diagram. C1 1. Determine the values of the following variables in C...

A:

Q: Two charged parallel metal plates are separated by a distance d and a potential difference of VAB be...

A: Detailed solution of given question is given in below steps.

Q: 1. A voltmeter has an internal resistance of 500 kilo-ohm. Determine the voltage drop across the vol...

A: According to guidelines we need to solve only first question kindly repost other questions in the ne...

Q: 2.49 • CALC A rocket starts from rest and moves upward from the surface of the earth. For the first ...

A: t = 10 s  ay = (2.80 m/s3)t   

Q: A body of mass 2 kg makes an elastic collision with a second body at rest and continues to move in t...

A:

Q: Assad a taxi driver is moving at a velocity of 15 m/s. Then he realized that he had only 30 seconds ...

A:

Q: 1. In the figure below, q1 = q2 = 2 µC and q3 = q4 = 4 µC. Determine the electric potential at point...

A:

Q: The eye has the power of a crystalline lens in small because its refractive index *

A: Power of lens is the reciprocal of focal length in meter. P = 1/f (m) 

Q: A wooden boat discovered just south of the Great Pyramid in Egypt had a carbon-14 contains of approx...

A:

Q: A capacitor of capacitance C and resistors or resistance R are connected in series as shown in tl pi...

A: Answer :  Correct answer is  ∆Vc= E . 

Q: Two parallel plates 2.25 cm apart has a uniform electric field of 2 x 106 N/C. A proton is moved fro...

A: Since you have posted multiple question, we will solve first for you. To get remaining questions sol...

Q: A 100 kg person and a 75 kg person are sitting on a bench. Estimate the magnitude of the longitudina...

A: Since no other forces are mentioned, the only force acting between the people is the gravitational f...

Q: An 20-g wooden ball is set in horizontal motion using the same set-up used in the activity. The hang...

A:

Q: A person with a range of vision from 23 cm to ∞ uses a 15 cm focal length magnifier. (a) Find the a...

A: Given,  The near point of the person is at a distance D=23 cm Focal length of the magnifier , f=15cm

Q: During running, the velocity of blood flow is about (100 cm / s) in the aorta. What is the kinetic e...

A: The kinetic energy is given by KE = 12mv2, where m = the mass v = the velocity   Density is given by...

Q: From the window of a building, a ball is tossed from a height yo above the ground with an initial ve...

A:

Q: A driver drove from Ibri University to Salalah University campus for 9 hours at an average speed of ...

A: Total time taken (t) = 9 hours Average speed for total trip (v) = 110 kmhr

Q: 1. Suppose a spaceship heading straight towards the Earth at 0.750c can shoot a canister at 0.500c r...

A:

Q: After a fall, a 85 kg rock climber finds himself dangling from the end of a rope that had been 19 m ...

A:

Q: Elon is at the floor of a building h = 24 m tall. He launches a toy rocket of mass m = 0.4 kg straig...

A: Height of building (h) = 24 m mass of toy rocket (m) = 0.4 kg Force (F) = 10 N initial velocity of r...

Q: 3) Atmospheric pressure on the peak of Mt. Everest can be as low as 150 mm Hg, which is why climbers...

A:

Q: 1. A uniform bar, 9 ft long weighs 5 Ibs. Is supported from left end by a 12 Ibs load. Find W

A: W is the weight of the bar that acts at the middle of bar.

Q: Find the fluid force on the vertical side of the tank, where the dimensions are given in feet. Assum...

A: