A ball is thrown up with an initial velocity of 20 m/s and after some time it returns. What is the maximum height reached? Take g = 10 m/s2. a) 80m b) 20m c) 70m d) 40m
Q: The expression for Transmission probability is ____________ a) e-kL b) e-2kL c) ekL d) e2kL
A: B
Q: Most of the helium of the universe was produced __________ a) In stars b) In quasars c) At the time ...
A: D
Q: A ball rolls off the edge of a table. Let the time the ball leaves the table surface be .-o. If the ...
A: given that :- v→=1.4i^-9.8tj^ we know v→=dr→dt displacement of object in time interval t1→t2 is give...
Q: moves with zero initial velocity up to a velocity of 5 m/s with an acceleration of 10 m/s2. The dist...
A: A
Q: What is the rms speed of methane at 27℃? a) 450 m/s b) 532 m/s c) 678 m/s d) 745 m/s
A: C
Q: I need help with the following question
A:
Q: What is the reason for the occurrence of systematic errors in an instrument ? a) No use for a long t...
A: B
Q: Find the largest allowable time constant for this sensor. A 10-in-stroke wirewound translational pot...
A: The Explanation Given below:
Q: Which one of the following units can be used to measure matter? a) Kilogram b) Newton c) Second d) M...
A: A
Q: Assuming standard notations, which of the following quantities is dimensionless? a) v/a b) P/Fv c) F...
A: B
Q: The Fermi energy of a material is 3.45 eV. What is the zero-point energy of the material? a) 1.02 eV...
A: B
Q: 6-
A:
Q: Vectors
A:
Q: 2) A small object of mass 1 mg is confined to move between two rigid walls separated by 1 cm. a) Cal...
A:
Q: A horizontal force F pushes a block mass m=4kg against a vertical wall. If the coefficient of fricti...
A: The limiting value of friction up to which the body stays at rest till it starts moving is given by:...
Q: Which mathematical quantity is imagined to be present at the center of a black hole? a) Unity b) Sin...
A: Answer:- Option (b) correct. Singularity
Q: The rate of expansion of the universe is __________ a) Decelerating b) Accelerating c) Constant d) Z...
A: B
Q: The expansion age of the universe is about _________ a) 1 billion years b) 10 billion years c) 100 b...
A: C
Q: How many kilometers make one nautical mile? a) 1 b) 1.536 c) 1.852 d) 1.756
A: C
Q: How many variables are required to define the position of a body in space? a) 3 b) 2 c) 1 d) 0
A: A
Q: Calculate the Zero-point energy for a particle in an infinite potential well for an electron confine...
A: C
Q: What would be the most probable velocity for one Oxygen molecule at 300 K? a) 612 m/s b) 714 m/s c) ...
A: B
Q: Calculate the minimum uncertainty in the momentum of a 4He atom confined to 0.40 nm. a) 2.02 X 10-25...
A: C
Q: The velocity of a body varies as, v = 2t+5t2. What is the acceleration at t = 10? a) 102 b) 100 c) -...
A: given velocity function v=2t+5t2 we know acceleration a=dvdt a=2+10tat t=10a=102
Q: The Steady-state form of Schrodinger wave equation is _____________ a) Linear b) Quadratic c) Differ...
A: A
Q: Derive the magnetic field of an infinitely long straight coaxial cable that carries the same current...
A:
Q: Plane y= 0 acrries a uniform current of 30 â, mA/m. At (1, 10,-2), the magnetic field intensity is %...
A: current density J=30a^x mA/m we know that magnetic field due to plane sheet B=μ0J2 magnetic field in...
Q: 10V 122 60 23Ω 70 circuit 20Ω .18Ω 140 What is the current through the 62 resistor?
A:
Q: The probability of finding an electron is along two directions in which orbital? a) s b) p c) d d) p
A: C
Q: What would be the most probable velocity for one Oxygen molecule at 300 K? a) 612 m/s b) 714 m/s c) ...
A: B
Q: 4. The charred bones of a sloth in a cave in Chile represent the earliest evidence of human presence...
A: Given, Bone sample specific activity =5.22 d/min.g Living organism specific activity=15.3 d/min.g t1...
Q: As the size of the quantum dots decreases, does thewavelength of the emitted light increase or decre...
A: To answer: As the size of the quantum dots decreases does thethe wavelength of the emitted light inc...
Q: Please answer this one regarding electroscope
A: Every metal contains a lot of free electrons. When a positively charged rod is brought close to the ...
Q: Two sheets of charge, the first has a charge density of 10 nC/m2 and the second has a charge density...
A: Given σ1=10nC/m2 σ2=-10nC/m2 point (0,2,0) is located between plates. electric field due to first sh...
Q: A 1-kg bird sits on the middle of a clothesline whose supports are 10 m apart. The clothesline sags ...
A: To solve this question, we will use the concept of equilibrium of forces. Given, Mass of the bird m=...
Q: Two small insulating spheres with radius 5.00×10−2 mm are separated by a large center-to-center dist...
A: Electric Field Electric Field is a region in space around a charge or a group of charges that if ano...
Q: 110 kN 50 kN | 60 kN (a) 110 kN (b) -110 kN 110 kN (c) 110 kN (d) An axially loaded stepped bar is s...
A: from given problem Take compressive force as negative and extensive force as postive
Q: 1 4 A B C The figure above shows four very thin parallel planes of charge with equal separation betw...
A:
Q: -Sinusoidal waves are characterized by the upward and downward movement of particles. In the same wa...
A: This is an imperative yet elegant example of advanced physics applicable in real life. I once suffer...
Q: Elastic waves in crystals are made up of _______________ a) Photons b) Nano particles c) Atoms d) Ph...
A: Answer:- Option (d) correct Phonons.
Q: Which of the following unit is related to sound frequency? a) Hertz b) Decibel c) Second d) Meter
A: A
Q: Which of the following is not an implication of Hubble’s law? a) The universe is expanding b) We are...
A: B
Q: The ratio of rms velocity to most probable velocity is ________ a) √3 : √2 b) √2 : √3 c) 3 : 2 d) 2 ...
A: A
Q: For the vector E = 3ay - az, the Ee component at (10, t/3, 1/4) is:
A: We know, For transformation of Cartesian coordinate to Spherical coordinate the θ-component is give...
Q: INTRODUCTION TO VECTOR ANALYSIS Present neatly, COMPLETE and organized solutions to the following a...
A: athe x-component of R.bthe y-component of R.cthe magnitude of resultant R.given,Vector I is 20.00 km...
Q: Which of the following can be a wave function? a) tan x b) sin x c) cot x d) sec x
A: B
Q: solve E and D
A: The (e) part of the problem has been solved. (e) Given: The thickness of the shell is 1.0 pm. The ra...
Q: 1. Ris the resultant of the four forces A, B, C, and D. Find the magnitude of the angle e and the ma...
A: Concept used: A vector can be split into sine and cosine components.
Q: Uless stable than carbon-12 Why is the uranium-238 nucleus nucleus (12C? Give an explanation by refe...
A: According to Coulomb’s law, the two like charges (protons) repel each other. Inside a nucleus, sever...
Q: The displacement of a particle is given as function of time as x = t2 + 2t. How much displacement is...
A: B
A ball is thrown up with an initial velocity of 20 m/s and after some time it returns. What is the maximum height reached? Take g = 10 m/s2.
a) 80m
b) 20m
c) 70m
d) 40m
![](/static/compass_v2/shared-icons/check-mark.png)
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)