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!
A 31 kN roller coaster starts from rest and is launched along a horizontal section of track. It takes 23 m to reach a speed of 29 m/s.
1) What force is applied to the roller coaster during the launch?
= 57770N
2) A meter measures the energy input into the motors during the launch as 0.696 kW-hour. What is the efficiency of the motors?
=53.03%
3) After the launch, the roller coaster goes straight up, shooting out of the mountain. A minimum speed of 6.1 m/s is required at the top.Assuming no losses, how high above the initial elevation can the coaster go?
=40.97m
4) As the coaster comes down the hill to the same elevation at which it started, it loses 20000 J of energy. What is the speed at the bottom of the hill?
5) After the run, the roller coaster comes into the station with a speed of 0.45 times the speed at the end of the launch. What percent of energy was lost during the run?
A 220 g block on a 50 cm long string swings in a circle on a horizontal, frictionless table at 95.0 rpm. what is the tension on the string.
A bullet of mass 7.00g is fired horizontally into a wooden block of mass 1.26kg resting on a horizontal surface.What was the initial speed of the bullet
A 532 nm light wave in vacuum transmits into a glass plate of thickness 1.00 cm and index 1.60, at normal incidence. How many wavelengths span the glass
Then, 25 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 12 m/s. For the cyclist in this 25 s interval, find out each of the following. (a) displacement (b) average velocity (c) average acceleration
An automobile has mass 990 kg (including passengers). It is pushed down by 1.9 cm for every additional 100 kg of passengers. Find the amplitude of oscillation of the automobile
A positive charge of Q = 4.60 uC is fixed in place. From a distance of ri = 4.60 cm a particle of mass m = 5.70 g, What is the minumum distance rf between the two charges
Two crates, of mass 77 kg and 108 kg, arein contact and at rest on a horizontal surface (Fig. 4-47). A 729 Nforce is exerted on the 77 kg crate.If the coefficient of kineticfriction is 0.15, calculate the following: the force that eachcrate exerts..
A +6.00 µC charge is moving with a speed of 8.50 104 m/s parallel to a very long, straight wire. The wire is 5.00 cm from the charge and carries a current of 78.0 A in a direction opposite to that of the moving charge. Find the magnitude and directio..
Two charges are placed on the x axis. One of thecharges (q1 = +5.89C) is at x1 = +3.00 cm and the other(q2 = -27.0C) is at x2 = +9.00 cm. Find the netelectric field (magnitude and direction given as a plus or minussign) at (a) x = 0 cm and(b) x = +6...
A crystal is irradiated with X-ray photons with energies of 1.65 × 10-15 J. At what angles of incidence will the X-rays reflect from the crystal
What is the final temperature when .032kg of milk at 11C is added to .16 kg of coffee at 91C. suppose the specific heat capactieis of the two liquids are the same as water, and disregard any energy transfer to the liquid's surroundings.
When laser light of wavelength 633.3nm passes through a diffraction grating. thef irst bright spots occur at +- 18.4 degree from the central maximum, At what angle do the second bright spots occur
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