Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
For the following, suppose a star is at a distance of 20 parsec from Earth. Compute the following (only numbers and units are needed):
1) What is its apparent magnitude m?
2) If the star has the same luminosity as Sun, what is its absolute magnitude M?
3) By how much (what angle) does the apparent direction (relative to the fixed background of faraway stars) to this star change over one year?
4) How far away would a 100 W light bulb have to be to have the same apparent brightness (magnitude) as this star? (Note: L sun = 3.84.1026 W and M sun = +4.74 and m2-m1 = 2.5 lg (F1/F2))
A mirror produces an image of the sun, and the image is located 0.9800 m from the mirror. What is the object height ho of the tree
A 750 kilogram elevator starts from rest. It moves upward for 3.50 second with constant acceleration until it reaches its cruising speed, 1.75 m/s. Find how does this power compare with the motor power when the elevator moves at its cruising speed
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the world. Imagine that a steel wire with this length and a cross-sectional area of 3.40 10-6 m2 is laid in a straight line on the bridge deck with it..
An unknown substance has a mass of 0.125 kg and an initial temperature of 80.0°C. calculate the specific heat of the unknown substance
four identical metallic objects carry the following charges 2.2 microc 5.4 microc -3.4 microc and -8.8 microc. the
A particle of charge +1.5 nC is placed at a corner of a Gaussian cube with sides 12.0cm. What is an electric flux through the cube.
a 15 g lead bullet traveling at 240ms passes through a thin wall and emerges at a speed of 160ms . if the bullet
The four strings pass over the bridge of a violin, as shown below. The strings make and angle of 72.0° with the normal to the plane of the instrument on either side of the bridge. determine the force pulling the segment back to its equilibrium posi..
a microscope has an objective lens with a focal length of 12 mm. a small object is placed 0.8 mm beyond the focal point
A guitar string is being restrung with a string having a diameter of 1.4 mm and a length of 0.82 m when no tension is applied. If the string has a Young's modulus of 1.4 x 10^11 N/m^2 and is tightened by wrapping it three times around a peg with a 2...
a golf ball is struck with a five iron on level ground. it lands 92.7m away 4.20s later. what was a the direction and b
Light from a He-Ne laser of wavelength 633 nm passes through a circular aperture. What is the diameter of the hole
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd