4. A company manufactures LED light bulbs. The lifetime for these bulbs is 4,600 hours with a standard deviation of 250 hrs. What lifetime should the company promote for these bulbs, so that only 4.0% of them burnout before the claimed lifetime?

Q: 2..Express the following in V, using powers of ten: 32 SYSTEMS OF UNITS OF MEASUREMENT (a) 24 mV (b)…

A: Answer We have to convert the following values into volt

Q: The diameter of a carbon nanotube is 1.3 nm. This diameter in S.I. system is O a. 13 x10°m O b. 1.3x…

A: Given  Diameter of carbon Nano tube is d = 1.3 nm   Diameter in SI system is in meter

Q: The Hall voltage across a piece of semiconductor is 5 V, the charge density of the semiconductor is…

A: A) The relationship between the Hall voltage and magnetic field in case of a semiconductor is given…

Q: 1. Two men are moving a heavy metal box with a mass of 225 kg from an initial position to one that…

A:

Q: If A =i+ 5j - kand B = -3i- 2j + 5k. Answer the following problems. 1. 2A +B 2. A- 28 3. A.B 4. AXB

A: F

Q: mgh = 1 mv ₁ ² 2 Duph FAST 2 m = 1.00 kg 9 = 9.80 m/s² V₁ = 11 m/s 2 Solve for hieght (h)

A:

Q: An 20 cm long metal bar measures 4 cm by 3 cm. One end of the bar is exposed to a temperature of 321…

A: We use the heat flow equation dQdt=kAlT1-T2 where dQdt is the rate of heat flow, A is the cross…

Q: 0,77n {where n is the number of cycles 9. The Sonography Physics formula for Axial Resolution is A=…

A: The formula for the axial resolution is given as, A=0.77nF Here, n denotes the number of cycles and…

Q: from a speed of 0.500 m/s in 0.400 m by a large spring bumper at the end of its track. What is the…

A:

Q: Express each of the following as requested: -5 a. 2.34 x 10 eV in decimal notation. b. Express 891…

A: Given data:  Measurement of energy 2.34×10-5 eV Required: Express in Decimal notation

Q: A football field with an area of ​​120m x 60m is intended to be lit at night with 1000 W lamps,…

A: Given: The area of the football field is 120 m×60 m.             The power is 1000 W.…

Q: 1. Draw and label the vector with these components. Then determine the magnitude and angle of the…

A: 1.  (a) Ax = 3, Ay = - 2  The magnitude is given by  A= Ax2+Ay2A= 32+(-2)2A = 3.6  The angle is…

Q: Figure B. Hem acm -5n C tlon C

A:

Q: Find the uncertainty in a calculated electrical potential difference from the measurements of…

A: Given: The current in the circuit is I=1.5 A. The uncertainty in current is δI=0.2 A. The…

Q: Observation and Analysis: 1. What happens to Fe when you change value q1 while leaving the r and q2…

A: Given: here Force on q1 due to q2 and force on q2 due to q1 is electrostatic force. F_E

Q: 5 part A: If u(C) = 0.2C. What in the uncertainty of a 500 mF capacitor in mF?   5 Part B: If C…

A: 5 part A: From the question: Therefore, the capacitor is:

Q: A +6.0 µC and a -10.0 µC point charge are placed as shown in the figure. What is the potential at…

A:

Q: The first length measured in a laboratory experiment is 2.5 ± 0.1 m and the second length is 3.4 ±…

A: Given quantities: first length (a) = 2.5 ± 0.1 m second length (b) = 3.4 ± 0.1 m   a) It is known…

Q: A cubical box with sides of length 0.247 m contains 1.110 moles of neon gas at a temperature of 320…

A: length, a = 0.247 mn = 1.110 molesTemperature, T = 320 KMass, m = 3.35×10-26 kg

Q: Q1: Calculate the drift current density in silicon sample. If T=300 K, Na-1021/m³, N₁=1020/m³V,…

A:

Q: 1Pa = 1N/m true or false?

A: False Because 1 Pa = 1 N/m2

Q: kQ Derive the unit of Ep using the equation E, :

A: