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Divya
Questions and answers by
Divya
Questions (17)
This is from our problem set.
f(x)= 2(x^3)-3(x^2)-12x+20 write an equation of the line perpendicular to the graph of f at x=0 I
1 answer
450 views
A 1.00 L flask containing the equilibrium mixture CO +Cl2 <-> COCl2 was found to contain 0.400 mol of COCl2, 0.100 mol of CO,
3 answers
1,473 views
A solution of NaOH(molar mass 40g mol-1)is prepared by dissolving 1.6g of NaOH in 500 cm cube of water.Calculate molarity(M) of
2 answers
632 views
The perimeter of a rectangle is72cm. It's breath is 8cm. Find its length
3 answers
535 views
Particle 1 of mass 3m initially moving with a speed v0 in the positive x-direction collides with particle 2 of mass m moving in
2 answers
576 views
Find PV
of an annuity of ₹12000 received at the end of 4 years if the ROI is 10%
1 answer
357 views
A man of mass 50kg is walking on a long wooden board of mass 200 kg. The wooden board is initially at rest on a frictionless ice
2 answers
587 views
Hi!!! I want help in maths . The interior angles of a pentagon are in the ratio 4:5:6:7:5 . Find each angle of the pentagon.
3 answers
540 views
Cos255+sin165
1 answer
348 views
Find m :- 1) (5^m×5^3×5^(-2))/5^(-5) =5^12
1 answer
267 views
CRITICAL THINKING: Mercury's average distance from the sun is 57,910,000 km. The Earth is approximately 93,000,000 miles from
2 answers
534 views
They shut the road through the woods seventy years ago’.
a. Name the poem and the poet. b. Whom does ‘they’ refer to? c.
2 answers
603 views
1. What message is the poet conveying through the poem, ‘The Way Through the Woods’. Illustrate the message graphically by
2 answers
924 views
‘The Way Through the Woods’, describe the present state of the woods? By drawing inferences from the poem, describe the
5 answers
774 views
The teacher asked me to close the window. What could be the best option if this sentence was written in direct speech?
A. "Please
4 answers
1,156 views
A farmer is selling paddy.
Convert this sentence into passive
1 answer
205 views
There are 28 students in a class 16 of them are boys . what percentage of the class are girl
1 answer
198 views
Answers (9)
Solve it
9.8
Which contain this question
Ans
3:1
Power=energy/time If power is 60 watt that is 60 joule per second. Energy emitted for 730 hrs=60*730*60*60=157680000J 93 percent of total emitted energy=0.93*157680000=146642400J Energy of single photon =hc/lambda=3.155*10 pow(-19) Then no:of photons
As we know that PV =nR T .................(1)eqn. First of all, we will find n =given mass / molar mass Then, put values in equation no. (1) Make sure about value of R Answer will be 6.239litres
Is dr/dt means actual velocity??
80,100,120,140 and 100.
