1. A metallic conductor has a resistivity of 18 x 100m. What is the resistance of a piece that is 30m long and has a uniform cross-sectional area of 3.0 x 10* m?

Q: 2. A 35 kg child is riding on a swing. At her highest point she is 1.8 m above the ground, at her…

A:

Q: A neutron at rest decays (breaks up) to a proton and an electron. Energy is released in the decay…

A: This problem can be solved using conservation of energy concept.

Q: 2. A playground is on the flat roof of a city school, 6.00 m above the street below. The vertical…

A:

Q: 2. A person decides to swim across a river 84 m wide that has a current moving with a velocity of…

A: According to guideline I solve only first 3 subparts of question 2.

Q: 4. A cannon is pointed upward at an angleof 30 degrees with respect to the horizontal ground. If the…

A:

Q: Use the data of this table to find the point between Neptune and the Sun at which an object can be…

A: We have mass Sun M1=1.991*1030kg, mass of Neptune M2=1.03*1026kg and distance between the Sun and…

Q: What is the magnitude of the total magnetic force the long wire exerts on the current loop? a. Zcro…

A:

Q: A string on the violin has a length of 19.80 cm and a mass of 0.0752 g. The fundamental frequency of…

A:

Q: a) By using the relation of work done in the form of volume charge density, calculate the energy…

A:

Q: 13. A very big truck collides with a small sports car. which experiences the greater acceleration?…

A: given:- a very big truck collides with a small sports car .

Q: For numbers 1 to 4, use Fig. 1. three point charges, with le] = 1.6 x 10-19 C, are simultaneously…

A: Concept Magnetic field due to a straight conductor at any point on its axis will always be zero.This…

Q: e figure four particles are fixed along an x axis, separated by distances d = 3.90 cm. The charges…

A: Here we will use coulomb's law to get required force.

Q: Pre-Lab Question #3: Now you can finish the calculation as follows (include units): |Fo| = V35.22…

A: Given data: -  The net force is Fnet=35.2x^+76.5y^. The x component of the net force is Fx = 35.2…

Q: 3. Refer to the figure below. What is the magnitude and direction of electric field at point Y from…

A: 3) Draw the schematic diagram of the system.

Q: 4. What is the rate of heat transfer by radiation, with an unclothed person standing in a dark room…

A: Given, Ambient Temperature =24°C Skin temperature =32°C Surface Area =1.6 m2. Emissivity of skin…

Q: . Two marbles with masses, MA = 50g and MB = 20 g, collide on a frictionless surface. Marble A is…

A: Given, Masses of two marbles, MA=50gMB=20g The velocity of marble A is, vA=0.35m/s The velocity of…

Q: 1. A spring mass system is placed on smooth horizontal table. From equilibrium position the mass is…

A: Given tAB=2secM=200g=0.2 KgU=total energy=0.9 J

Q: A Cu rod 80.0cm long is at a temp. of 50.0°C. What is its length at -20.0°C? The coefficient of…

A: Given:-length of rod (L0)=80.0 cminitial temprature (Ti)=50.0°Cfinal temprature=(Tf)=-20.0°Clinear…

Q: An elec Compute the electric potentials at points a, b and c. charges, q1 =+12 nC and q2 =-12 nC…

A: Given: The value of point charge q1 is 12 nC or 12×10-9 C.            The value of another point…

Q: 18. The necessary conditions for the equilibrium of an object is a) ΣF=0 and Στ0 b) ΣΤ= 0 and Σ Ιω-0…

A:

Q: 1.A motorboat was moving E 20° S] at 50.0 km/h. The operator then turned the boat E 20° N] and…

A: 50kmph E 20° S  30kmph E 20° N  East and West as X axis  North and South as Y axis  T= 5min

Q: What is the focal length (in cm) of a magnifying glass that produces a magnification of 3.85 when…

A: Given: Magnification, m = 3.85Object distance, u = 4.75 cm Need to find focal length, f

Q: The expanding gases that leave the muzzle of a rifle also contribute to the recoil. A.30 caliber…

A: The mass of the bullet is The speed of the bullet relative to the muzzle is The mass of the rifle is…

Q: 3. The drawing in Fig. 3 shows a 25.0 kg crate that is initially at rest. Note that the view is one…

A: Friction.

Q: 5. Two long, parallel conductors, separated by 10.0 cm carry currents in the same direction. The…

A:

Q: Two large rectangular aluminum plates of area 140 cm² face each other with a separation of 3 mm…

A:

Q: mass 5. A billiard ball moving with a speed 5m/fee collides head-on with a second ball of equal at…

A: Given Mass of cart-1 = m1 = 0.350 kg Mass of cart-2 = m2 = 0.50 kg Initial velocity of cart-1 = u1 =…

Q: A proton traveling at 34.2° with respect to the direction of a magnetic field of strength 2.27 mT…

A: Given data θ=34.2°B=2.27 mTF=9.44×10-17 N Here, B is the magnetic field and F is the magnetic force.…

Q: Consider a sound wave moving through the air modeled with the equation s(x, t) = 3.00 nm cos(55.00…

A: Given:      Sx,t=3nmcos55m-1x-14×103s-1tHere wave number k=55 m-1       And…

Q: Determine the magnitude and direction (to the nearest degree) of the equilibrant of the following…

A:

Q: Seatwork. (. A car travels on the road with a constant velocity. a) (what is the horizontal ret…

A: Given  Car is travelling with constant velocity . To find  a) Horizontal net force acting on the car…