A roller coaster is going over a hill with a radius of 20 m. a) How fast does it have to go for passengers to feel weightless at the top? b) Suppose the roller coaster was running on the Moon, where the acceleration is only 1.7 m/s^2. How fast would it need to travel for you to feel weightless there?

Q: A roller-coaster car is moving at 20 m/s along a straight horizontal track. What will its speed be a...

A:

Q: A certain strain of bacteria will divide itself from 1 to 2 every to [minute]. As a result, its popu...

A: Given: Population model The table is  Initial population No = 100   Asked: to find to in minutes

Q: Calculate the fraction of non-reflected light that is transmitted through a 106-mm thickness of glas...

A: Given value--- absorption coefficient = 0.0002. sample thickness = 106 mm. We have to find--- Cal...

Q: Find a unit vector directed from (0, 1, 5) to (2, -2, -1)

A: Given: A(0,1,5)  B(2,-2,-1)  

Q: 1(a) In a Michelson interferometer is set for the white straight fringes. When a mica sheet of thick...

A: In Michaelson interferometer the refractive index (n) is given by,  n-1 = m*wavelength/2t Where, m *...

Q: A block of mass M is suspended at rest by two strings attached to walls, as shown in the figure. The...

A: Given: The object is at rest. The tension T1 = 41 N and θ=41°.

Q: The 4.3-kN force F is applied at point A. (a) Compute the moment of F about point O, expressing it b...

A: GivenForce applied at A, F=4.3 kNxA=1.2 m, yA=1.8 ma=7, b=11

Q: Given the position-time graph below, what is the average velocity between P4 and P5? 450 P3 P4 400 3...

A: Given in question -  Position time graph To find - Average velocity(V) between P4 and P5 Solution: S...

Q: • Two trains 100 m and 120 m long are running in the same direction with speeds of 72 kph and 54 kph...

A:

Q: n the circuit of Fig. 2 calculate: a) Total Capacitance b) Total charge of the network c) Voltage ac...

A:

Q: Suppose that C Cos (wat) and D Sin (wot) are two independent solutions of the SHO differential equat...

A:

Q: What is the equivalent capacitance (in F) between points a and b? All capacitors are 1.5 F.

A: Required:- We need to calculate equivalent capacitance between point a and b.   Formula:- When two c...

Q: 3. A body weighing 200N is pulled on a horizontal purface by a firce of 50Ñ paralled Yo the surface ...

A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...

Q: Two point charges (A and B) are separated from each other by a distance of 6.68 m. What is the (a) ...

A:

Q: x Y Vo Horizontal Field As compared to the horizontal component of the velocity at point Y, the hori...

A: Answer : (C) Same The horizontal component of velocity incase of a projectile motion remains the sam...

Q: (Challenge problem) A 3-kg block slides along a frictionless tabletop at 8 m/s to- ward a second blo...

A: GivenMass of block 1 ,m1=3 kgvelocity of block 1, v=8 m/sAndMass of block 2, m2=4.5 kgSpring constan...

Q: A particle with a charge of q = -5.00 nC is moving in a uniform magnetic field of B =(-1.20 T ) î. T...

A:

Q: A block is pulled along a rough level surface at constant speed by the force P. The figure shows the...

A:

Q: EVALUATE THE STATEMENTS. The spacing of the electric field lines in the vicinity of two point charge...

A: The spacing of electric field lines represents the magnitude of electric field. A closely packed ele...

Q: of the top line is 30 V and the potential decreases by 10 V until the 0 V line is reached. Then, the...

A:

Q: In the figure, wheel A of radius ra = 13.3 cm is coupled by belt B to wheel Cof radius rc=20.4 cm. T...

A:

Q: Consider a concave mirror with radius R. An upright object is placed between the interval and R. R R...

A:

Q: Which of the following is an example of a vector quantity? a. volume b. velocity C. mass d. temperat...

A: Explanation :- A vector quantity has both magnitude as well as direction. So checking options- a- As...

Q: explain how did they get the 102 degree.

A:

Q: A ball is thrown upward in the air with an initial velocity of 40 m/s. How long does it take to reac...

A:

Q: Light strikes the surface of a prism, n = as shown in the figure. 1.74, 45° If the prism is surround...

A: Given : ni = 1.75  θi = 45 ‌‌‌o

Q: A large weather balloon of mass 226.0 kg is filled with helium gas until its volume is 325.0 m3. Cal...

A:

Q: 2. A point charge of -8 x 10-7C is 5.00 m from point A and 6.00 m from point B a) Find the potential...

A:

Q: EVALUATE THE STATEMENTS. An electric field does positive work on a charged particle if (I) a negati...

A: Option (a) is correct answer. The statement one is correct while the other statement is wrong.

Q: 5. A rectangular loop of area A = 0.160 m² is placed in a region where the magnetic field is perpend...

A:

Q: roller-coaster car is moving at 20 m/s along a traight horizontal track. What will its speed be afte...

A:

Q: A speed boat pulls a water-skier (with a mass of 100 kg) at a steady speed by a rope at 15 degrees a...

A:

Q: In the system of connected blocks shown in the figure, the coefficient of friction under blocks B an...

A:

Q: Suppose that à = 2i + j, B =i- 4j + k, and =j+k. What is A· (B x Č), A) -2 k B) -11 -2 D) -11 k

A: Vector product is denoted by the a x b whereas dot product is denoted by a.b Vector product gives ma...

Q: 5 V These are materials whose electrical properties are in between the conductors and insulators * S...

A: Semiconductors are the material that has electrical properties between Conducter and insulators for ...

Q: Eind Àx C) · (Č × B) given the following vectors: Å = 21 + 5j B = -31 – }+ 2k Ĉ = 1+ 4j 51 k B 33k 5...

A:

Q: What is the importance of recording the room temperature and atmospheric pressure prior to the exper...

A: Temperature- temperature is an an important fundamental parameter which shows that whether a thermod...

Q: You drive your car from home to school at an average speed of 60 kph East for 1 hr and then continue...

A:

Q: Given A = ax + 4ay and B = 5ax – ay + 2az Determine the scalar projection of vector A on vector B.

A:

Q: It is the ratio of the output force to the input force of a simple machine." AMA Eff IMA It is compo...

A: (i) AMA = Actual mechanical advantage = Fo/Fi (ii) Wheel and Axel

Q: car with mass of 950 kg is traveling along a flat road at 35 m/s. To pass another the car speeds up ...

A: Given Mass m= 950 kg Initial velocity u = 35 m/s Final velocity v = 42 m/s 

Q: Circular Motion: Please answer vertically. Thank You. A penny is put on a turntable 0.4 meters from...

A:

Q: A specific aircraft needs a velocity of 42m/s to generate enough lift for takeoff. It takes 50.0s to...

A: GivenSpecific aircraft needs a velocity=42 m/sTime taken by aircraft =50.0 s

Q: À = 2i + j, B =i- 4j + k, Ĉ = j+k. and What is the magnitude of the vector 2Ã - B + Č, A) 9.24 B) 4....

A:

Q: The 29-N force P is applied perpendicular to the portion BC of the bent bar. Determine the moment of...

A:

Q: A 10-kg block is connected to a 40-kg block as shown in the figure. The surface on that the blocks s...

A:

Q: A 5-L amount of water at a temperature of 25°C will be raised to what temperature if 3000 calories o...

A: Given value--- Volume = 5 L. initial temperature = 25 degree C.  heat = 3000 cal. We have to find-...

Q: zero? Three point charges are arranged along the -axis. Charge q1 = +3.00 µC is at the origin, and c...

A:

Q: The filament of an incandescent light bulb is made of tungsten which has a thermal coefficient of re...

A: We have I =VR=VR01+α∆T

Q: Question 3 of 9 A space traveller weighs herself on Earth at a location where the acceleration due ...

A: Given : g = 9.83 m/s2 W = 503 N g' = 13.1 m/s2

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!