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Q: 7B. A 98.2 g copper rod is cooled from 80°C to 25°C by tossing it into a very large swimming pool at...

A: Given information: The mass of copper (m) = 98.2 g = 0.0982 kg initial temperature of the copper (T1...

Q: Two electric charges are separated by a finite distance. Somewhere between the charges, on the line ...

A: The expression for the electric field is, E=q4πε0r2 Here, q is the charge, r is the distance between...

Q: A woman fires a rifle with barrel length of 0.5400 m. Let (o, 0) be where the 75 g bullet begins to ...

A: a) The work done by the gas on the bullet can be found as, Here, F and L represent the force exerte...

Q: An airplane is heading north at an airspeed of 1200 km/hr, but there is a wind blowing from the sout...

A: Given data: The speed of an airplane moving towards north is V1=1200 km/hr. The speed of wind towar...

Q: Parts d,e and f

A: Given, m=750 g=0.750 kg, k=145 N/m, Spring pulled, A= 25cm=0.25 m

Q: A ball starts from rest and rolls down a hill with uniform acceleration, traveling 200 m during the ...

A: Since the ball starts from rest the initial position is zero, and initial velocity is zero, the tota...

Q: A block is sliding with constant acceleration down an incline. The block starts from rest at t = 0 a...

A: a) Block moves at a constant acceleration. So using kinematics equation: Substitute 0 fir v0 (8m) f...

Q: A ball is thrown against a wall; the ball bounces off and returns with speed equal to the speed it h...

A: The correct option is (E), i.e., Don’t be silly, all of these are false! (A) The momentum is changed...

Q: A speeding car is traveling at a constant speed of 39.5 m/s when it passes a police car. The police ...

A: Given The constant speed of the speeding car is v = 39.5 m/s. The acceleration of police car is a = ...

Q: A power drill starts from rest and undergoes uniform angular acceleration for a period of 0.175 s un...

A: Given: Initial angular velocity = 0 final angular velocity = 2.65 x 104 rev/min. Time period = 0.175...

Q: How far must the point charges q1 = +6.22 mC and q2 =-22.1 mC be separated for the electric potentia...

A: q1 = + 6.22 mC q2 = - 22.1 mC Potential energy, U = - 106 J

Q: What is Hydrogen Bonding? Explain with an example?

A: Click to see the answer

Q: A 1.6-kg mass attached to a spring oscillates with an amplitudeof 7.3 cm and a frequency of 2.8 Hz. ...

A: Click to see the answer

Q: A constant-volume gas thermometer hasa pressure of 80.3 kPa at -10.0 °C and a pressure of 86.4 kPa a...

A: The first condition of the constant volume thermometer is, The second condition of the constant vol...

Q: Using the following picture, consider a collision of a ball with a wall. From the picture, indicate ...

A: Introduction: The change in any vector quantity can be found out by finding the change in direction,...

Q: Three cars of equal mass and velocities are traveling south down 41 through Acworth. When they each ...

A: Given Data: Masses of car are equal i.e. m1=m2=m3=m Velocities of the car are equal i.e. u1=u2=u3=u ...

Q: Find the change in temperature if 170 J of heat are added to2.8 mol of an ideal monatomic gas at (a)...

A: Given Data: The heat added to the ideal gas is Q = 170 J. The number of moles of an ideal gas is n ...

Q: Parts e,f,g

A: Given data Mass of the bullet, m=7 g=0.007 kg Mass of the block, M=750 g=0.75 kg Spring constant, k=...

Q: A 0.75 kg block is held at rest against a spring with a force constant k=730 N/m. The spring is init...

A: Given data The mass of the block is: m = 0.75 kg The spring constant of the spring is: k = 730 N/m T...

Q: A heat engine with an efficiency of 24.0% performs 1250 J of work. Find (a) the heat absorbed fromth...

A: efficiency = 24 % Work , W = 1250 J

Q: Two lamps are separated from each other and both emitting light to a wall different distance. If the...

A: illumination is given by, E=Ir2 Here, I is the luminous intensity expressed in candela.

Q: (a) If your speedometer has an uncertainty of 2.0 km/h at a speed of 90 km/h , what is the percent u...

A: a) Given:- Speedometer has an uncertainity ug of 2 km/h Speed sg= 90 km/h Solution:- The percent unc...

Q: The coorect answer should have variable m in it

A: Click to see the answer

Q: Gauss’s law can tell us how much charge is contained within aGaussian surface. Can it tell us where ...

A: No, Gauss's law cannot determine the position of charege.

Q: Why does a coach in soccer tell a player to “follow through” with their shot on goal? A) to increas...

A: Follow through is when the movement of stroke is continued after the ball has been struck.

Q: A 4.0 cm tall light bulb is placed a distance if 35.5 cm froma convex mirror having a focal length o...

A: Given: A 4.0 cm tall light bulb is placed a distance if 35.5 cm from a convex mirror having afocal l...

Q: A rectangular loop of resistance R, mass m, width w is placed as figure below. Find the distance the...

A: Given Data: Loop resistance=R Width of the loop=W Applied field=B Velocity of the loop=vo Let length...

Q: (a) What is the acceleration of the spool? Take positive to be to the right. ]m/s² (b) Determine the...

A: Given , A force T→=0.430 N acts along the horizontal towards the right. Assume, the frictional forc...

Q: Silver pellets with a mass of 1.0 g and a temperature of 85 °C are added to 220 g of water at 14 °C....

A: Given: The mass of the silver pellet is 1.0 g. The temperature of silver pellet is 85°C. The mass of...

Q: The bullet is fired upwards at an angle θ (tan θ = 3/4) of a building 90 meters high at 25 m / s. If...

A: Click to see the answer