A toy gun uses a spring to project a 5.3-g soft rubber sphere horizontally. The spring constant is 8.0 N/m, the barrel of the gun is 15 cm long, and a constant frictional force of 0.032 N exists between barrel and projectile. With what speed does the projectile leave the barrel if the spring was compressed 5.0 cm for this launch?

Q: 2) A block of mass m is attached to a spring with force constant, k and oscillate at a frequency f. ...

A: The initial frequency of a system is calculated as, f=12πkm

Q: A 100-turn coil has a radius of 4.48 cm and a resistance of 26.6 Ω. The coil is in a uniform magneti...

A:

Q: A projectile is launched at an angle of 45 degrees with respect to the horizontal ground. What is th...

A: Angle of projectile: θ = 45o from horizontal Initial speed of projectile: u = 180 m/s

Q: The saddle of a swing is 3 feet from the ground. Peter plays on a swing and acquires a vertical disp...

A: The potential energy is  U =m g h  The kinetic energy is  K = 0.5 mv2  where, m is the mass, g is th...

Q: What will be the direction of electric field when a positively charged particle is moving in the pos...

A: An electric field (sometimes E-field) is the physical field that surrounds each electric charge and ...

Q: Find the centripetal force exerted on a 7.12-kg mass moving at a speed of 2.98 m/s in a circle of ra...

A: Find the centripetal force exerted on a 7.12-kg mass moving at a speed of 2.98 m/s in a circle of ra...

Q: The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.0370 ...

A: Before collision:momentum along X-axis: (0.037×7.15)kg-m/smomentum along Y-axis: 0After collision:Le...

Q: Keep the track tilted at 14° with the horizontal. Put the friction block on the track surface at the...

A:

Q: Some computer keyboards are based on the idea of capacitance. Eachkey is mounted on one end of a plu...

A: The capacitance of the capacitor between the reduced distance of the plates is, C=kε0Ad=3.508.85×10-...

Q: Determine tne magnitude of the moment produced by force '= {-5i+6j+9k} N about the diagonal axis AF ...

A:

Q: A railroad car which has a mass 9216 kg is constrained to move along a horizontal track under the ac...

A: Mass of railroad car =9216 kg Frictional force = Ff= 1/200 x mg weight of railroad car = mg S= Area ...

Q: A light bulb has a resistance of 240 Ω when operating at 120 V. What is the current in the light bul...

A:

Q: A conducting rod is pulled horizontally with constant force F= 3.90 N along a set of rails separated...

A:

Q: L. Taking the equipotential points obtained in the first stage of the experiment and using the knowl...

A:

Q: A circular coil 14.0 cm in diameter and containing nine loops lie flat on the ground. The Earth's ma...

A: The given data are: d=14 =0.14 mN=9B=4.5×10-5 Tθ=59°I=7.8 A Here, d, N, B, θ, and I represent the di...

Q: Ch23,P57

A:

Q: A person sees clearly wearing eyeglasses that have a power of – 4.0 D when the lenses are 2.0 cm in ...

A: a) we know that focal length f is given by  f = 1/P= 1/-4=-25cm   

Q: The half-life of the radioactive element unobtanium-53 is 5 seconds. If 176 grams of unobtanium-53 a...

A:

Q: What magnitude of frequency does the cellphone signal band lie on in the electromagnetic spectrum? ...

A:

Q: Ch24,P9

A:

Q: A 119 kg seal at an amusement park slides from rest down a ramp into the pool below. The top of the ...

A:

Q: A negatively charged balloon has 2.3 µC of charge. How many excess electrons are on this balloon? Th...

A: Given : Charge of Balloon, Q = 2.3 μC                                    Q  = 2.3*10-6 C Elemental c...

Q: ', where A(t) is the amount of the isotope at time t (in years) and A, is the original amount. if th...

A: A(t) = Aoe-0.00002866 t where t is in years   

Q: 94. The total resistance R of three resistors in parallel is given by RR2R3 R R¡R2 + R,R3 + R,R3 Sup...

A: The expression for the total resistance is given as R=R1R2R3R1R2+R1R3+R2R3 Substituting the values i...

Q: If we apply a constant force of 100 N on a 10.0 kg object that is located on a surface, what is the ...

A: Given data F=100 Nm=10 kg

Q: A driver pulley of diameter 6.50 in. revolves at 1650 rpm. Find the speed of the driven pulley if it...

A:

Q: The inner and outer surfaces of a cell membrane carry a negative andpositive charge, respectively. B...

A: Given: The potential difference (V) between the inner and the outer surface of a cell membrane is 0....

Q: Suppose an electron in the picture tube of a television set is accelerated from rest through a poten...

A: As given in figure  Potential difference Vb-Va = 5000 Volt Charge of electron e = 1.6×10-19 Coulomb ...

Q: The centripetal force on a car of mass 800 kg rounding a curve is 6250 N. If its speed is 15.0 m/s, ...

A:

Q: A piece of metal having a mass of 250g at 95oC is immersed in 150g of water at 20oC.  If the final t...

A:

Q: 1

A: When two battery connected in series total voltage is  V=2*1.5=3V we know that  current I =V/R  

Q: (7) A hinge attached to a wall connects a 3.0 m long pole while the other end is held up by a rope a...

A: Given that the value of angle and length and tension. Then We have to determine the value of mass of...

Q: just need b

A:

Q: A 120-g baseball is pitched at 26 m/s spinning at 45 rad/s. You can treat the baseball as a uniform ...

A: Mass , m = 120 g = 0.12 kg Linear velocity , v = 26 m/s Rotational velocity , ω = 45 rad/s radius , ...

Q: The amount of charge that moves through the filament of a light bulb in 2.00 s is 2.67 C. What is th...

A: The given data are: t=2 sQ=2.67 C Here, t, and Q represent the time and charge.

Q: 10. Under what condition, a two-dimensional centered rectangular lattice will become (a) a square la...

A: Answer :-  (a) A  square lattice  Square lattice with a = b and Y( gamma) = 900 (1) An oblique latti...

Q: What is the frequency of the fundamental? What is the wave speed?

A:

Q: When you flip a switch to turn on a light, the delay time before the light turns on is determined by...

A: Given:-  When you flip a switch to turn on a light, the delay time before the light turns on is dete...

Q: It takes 5.895 seconds for a vehicle to stop from a velocity of 98.4 ft/s when the brakes exerted a ...

A: Time duration: t = 5.895  Initial velocity: u = 98.4 ft/s Final velocity: v = 0 ft/s External force ...

Q: What’s the answer to question 10 11 and 12?

A: Newtons third law states that to every action there is an equal and opposite reaction i.e. F1=-F2   ...

Q: A 4.020-gram bullet is projected horizontally to a block of timber that rest on a horizontal floor. ...

A: The maximum displacement of the block is when the kinetic energy of bullet was completely transforme...

Q: How would you slove

A:

Q: The average speed of a car is 27 m/s during the first 10 seconds of acceleration. What is the initia...

A: The car’s average speed can be represented as, Here, v and u represent the car’s final and initial ...

Q: A solenoid has a length of 20 cm, a radius of 0.8 cm, and 350 turns, and carries a 2.9-A current. Fi...

A: Find the self inductance of the solenoid. L=μ0N2AL                                                  ...

Q: Ch24,MC2

A: Diverging lens always forms virtual image while converging lens forms both real and virtual image  H...

Q: For the graph shown in the figure, what physical quantity does the slope of the graph represent for ...

A:

Q: A record player plays records at 35 rad/s (this is the angular velocity, ω). When the player is swit...

A: Given values:- Angular velocity,(ω)=35 rad/sec -----(1) Time taken to stop spinning,(t)=5 sec ----(2...

Q: Ch24,MC7

A:

Q: Ch26,P3

A: Distance between the speakers = D distance between B and the person = d The distance between A and t...

Q: 4. When the following are changed, how is the capacitance of a capacitor affected: a) charge b) pote...

A: The capacitance of a capacitor is affected by the area of the plates, the distance between the plate...