2. The dimensions of the roof of the house are given. If the thermal conductivity of the roof is 0.8 W/mK, a) determine amount of heat loss for 10 hours during the night? b) cost of electricity is 0.11 USD/kWh, how much does it cost to heat the house? Concrete roof 8 m 4°C 15°C 6m 0.25 m

Q: This second answer is still incorrect.  Would there be another way to figure this out?   Thanks

A: Given data: Image distance (near point), v=-55 cm=-0.55 m Object distance, u=25 cm=0.25 m From part…

Q: can you please explain answer number 3?

A: In interference , when crest overlap with crest (or trough) it form a constructive interference and…

Q: 8. Two blocks are in contact with each other and are being pushed by two applied forces. 30 N other.…

A:

Q: The drawing shows a frictionless incline and pulley. The two blocks are connected by a wire (mass…

A: Tension in the string T =253.4 N

Q: 1. Determine the electrical force of attraction between two balloons with separate charges of +3.5 x…

A:

Q: This is a drawbridge, held in place by a cable. The hinge is frictionless. This problem and the next…

A: Given The drawbridge's weight = W = Mg = 6000 lb length of drawbridge's = l = 52 ft the height of…

Q: 3. Does the real image formed by the lens in the original problem always have a length less than the…

A: The image formed by the convex lens is real when the object is placed farther than the focus of the…

Q: Please solve and answer the question correctly please. Thank you!!

A: The speeder's speed with respect to the ground is calculated asvs​=33.9405m/sExplanation:Step 1:The…

Q: The drawing shows three situations - A, B, and C - in which an observer and a source of…

A:

Q: Two planes. A and B, are flying at the same altitude. Their velocities are 4= 300 km/h and 1=640…

A:

Q: 30. In nuclear fission, a nucleus splits roughly in half. (a) What is the potential 2.00×10-14m from…

A: Given: In this question, the given details are, In nuclear fusion, a nucleus splits roughly in half.…

Q: The drawing shows three identical rods (A, B, and C) moving in different planes. A constant magnetic…

A:

Q: A pendulum has a period of 5.00 s on Earth. Part A What is its period on Mars, where the…

A:

Q: 3. The teapot with given power input is used to heat up water from 15°C to 95°C. Water has a mass of…

A: Power supplied (P)= 1200 WSpecific heat of teapot (C1) = 0.7 KJ/kg.°c Mass of teapot (m1) = 0.5…

Q: You pull a simple pendulum of length 0.240m to the side through an angle of 3.50degree and release…

A: Given: The given values are, The simple pendulum of length is, l=0.240 m to the side through an…

Q: e wavelength

A: Given:- ħ (Planck's constant / 2π) = 1.0545718 × 10⁻³⁴ J·s- Effective mass (m) = 0.19 m₀ (where m₀…

Q: 1. Determine the charge on a typical fluorine (F) ion. (Hint: group 7, so it gains 1 electron: q. =…

A:

Q: Part A How much work is done by each of the three forces? Express your answers using three…

A:

Q: 33. M CHALK MMH A car is traveling at 20.0 m/s, and the driver sees a traffic light turn red. After…

A:

Q: Hi can you please solve the 3 part too

A: We will answer this question by looking at how energy of the hoop changes as it rolls down the…

Q: While on a camping trip, a man would like to carry water from the lake to his campsite. He fills…

A: L = 1.67 ml = 0.0511 mDraw the free-body diagram of the system.

Q: Set up, but do not evaluate, integral expressions for the mass, the center of mass, and the moment…

A:

Q: hank you for the first part. Can I get help with the remaining sub-part?

A:

Q: Problem 2: A 50 gram ball 1s thrown against a wall at 5 m/s. A The ball hits the wall and then…

A: Consider the ball is thrown to the right (positive) or moving towards is positive  and rebounds to…

Q: 5. Calculate the average value of kinetic energy of an electron in 3s state of hydrogen atom. The…

A: The wave function of the 3s state of the hydrogen atom can be written as below,

Q: 4. a) Evaluate the neutron separation energy of Zr⁹¹ 402⁹1 40 90 Zr +n m(40Zr9¹)-90.905644u,…

A: (a)

Q: A rectangular loop of wire with sides 0.262 and 0.599 m lies in a plane perpendicular to a constant…

A: From Faraday's law of electromagnetic induction we know that the magnitude of induced emf is equal…

Q: Problem 2: Suppose the massless rod in the discussion of the nonlinear pendulum is a string of…

A:

Q: The blades of a wind turbine are 40 m in length and rotate at a maximum rotation rate of 13 rev/min.…

A: a) Write the expression for the moment of inertia of the rod. Write the expression for the angular…