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A: Solution
![If y = log[(AB) 2] then
A
B
Oy = log2 2
+ log
Oy=¹/(logA+logB)
2
Oy=2(logA+logB)
y = (logA – logB)
1
2
B](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa909e477-4c4f-4997-ae0a-c59baf54b083%2F05bb4018-1853-4e81-88c5-8ecfd230f12d%2Fzfkpmx_processed.jpeg&w=3840&q=75)
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- For (b), why do we divide the (100Wx8h) by (103Wh)? I get that we need to cancel out the Wh, but why do we divide by 103 specifically?STARTING AMOUNT + X An atom of a particular element has a volume of 6.1 x 10 volume in cubic nanometers? ADD FACTOR *( ) 10" 6.1 10 6.1 x 10 10⁰ 6.1 x 10 10* (10%) pm ANDWER 6.1 10 (10") E (10) 10⁰ What is this RESET 2 (1) (10%)w = FjAc = F .Aë , W = m(v;)* - m(u,)* , v 1 zm(us)* - m(v,)* , W = Problem 1: (a) à = 3â – 2ŷ, B = 4â& – 5ŷ. à ·B =? Answer: 22 (b) à = -2â + 4ŷ, B = 3âu – lŷ. Ā·B =? Answer: –10 (c) à = 5â – 3ŷ, B = -3â – 5ŷ. ÷B =? Answer: 0 1 | F,dx , W = F. dř , F, dU W = -AU dx d = 4m F = 20 N 0 = 30° m = 4 kg Hk = 0.5) m = 2 kg F = 40 N Hk = 0.2 Ө — 30° Problem 2: In the figure above on the left we have a force F = 20 N pulling a box to the right at an angle 0 = 30° above the horizontal. The box has a mass m = 2 kg, the coefficient of kinetic firction between the box and the ground is uk = 0.2, and the block moves a distance d = 4 m to the right. (a) What is the work done by the force F? Answer: 69.3 J (b) What is the normal force from the ground? Use g = 10 m/sec² Answer: 10 N (c) What is the work done by the kinetic friction force? Answer: -8 J (d) What is Wnet, the net work done on the box? Answer: 61.3 J (e) The box has an initial speed of 4 m/sec. What is the speed of the box after it has…
- We are going to make a simple approximation of the number of atoms in the universe. Assume all the atoms in the universe are hydrogen. (In actual practice, over 75% of the atoms in the universe are hydrogen.) Assume the sun is a typical star (made of pure hydrogen) has a density of 1.4 g/cm3 and is a sphere with a radius of 7.0*108m Assume that there are 100 billion stars in our Milky Way galaxy that are identical to our sun. Assume that there are 10 billion galaxies in the universe identical to our Milky Way galaxy. How many atoms are there in the universe?Pluto, which is 300 light minutes away? the electron neutrino and that of the muon 2. Suppose that the difference between the square of the mass neutrino is m, – m. a2 and that between muon and tau neutrino is m – m?, = b2. (a) What are the dimensions of a and b? (b) Find the values of mves Myµ and that will minimise the sum mv. + mv,+mvµ. 3. The black body energy spectrum is written as 8th e(f) = 3 exp(hf/kT) – - 1When a electrical appliances whose power usage is X watts is run for Y seconds it uses X×Y joules of energy. The energy unit used by electrical utilities in their monthly bills is the kilowatt-hour (kwh, that is, 1 kilowatts used for 1 hour) how many joules are there in a kilowatt hour? If electricity cost per $0.09 per kilowatt hour, how much does it cost per megajoule?
- The result of two measurements made in the laboratory are a = 4±1 (cm) and b = 7±2 (cm). Calculate ϵ(a+b), ϵ(a−b), ϵ(ab), ϵ(a/b) and ϵ(√ a).Evaluate and express in 3 sig figs 1. 12×10⁶/4 2. (3×10⁶)(8×10^-2) / (2×10¹⁷)(6×10⁵) 3. (9×10^-4)(5×10⁶) / (4×10⁶)(7×10^-4)Suppose the density of an atomic nucleus is 1.2 x 1018 kg/m³. What is this density in megagrams per microliter (that is, Mg/µL)? (1 mL has a volume of 1 cm³.) |
- Simplify the expression（1+cotx）（1-cotx）-csc square x as far as possible.rch Please answer the following question(s): 1. Simplify the following: (a) log2 Answer: log 4x 4x* log(2) (b) log₁0√√x√y Answer: log₂x+ Submit Answer log 10x+ Powered by CogBooks View Forum Activities (0 new of 0) see other options - If you don't want to answer the question right now log₂y+ 99+ log10YI'm not understanding how you are getting the v in this problem. I understand you multiply the inverse of 1/v, but can't understand what v is and how you determine that number?