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!
1) A cannon shoots a ball at an angle θ above the horizontal ground. (a) Neglecting air resistance, use Newton's Second Law to find the ball's position as a function of time. (Use axes with x measured horizontally and y vertically.) (b) Let r(t) denote the ball's distance from the cannon. What is the largest possible value of θ if r(t) is to increase throughout the ball's flight? [Hint: Using (a)'s solution you can write down r2 as x2+ y2, and then find the condition that r2 is always increasing.]
2) An astronaut in gravity-free space is twirling a mass m on the end of a string of length R in a circle, with constant velocity w. Write down Newton's second law in polar coordinates and find the tension in the string.
3) A slab of mass M1 = 40.0 kg rests on a frictionless floor, and a block of mass M2 = 10.0 kg rest on top of this slab. Between the block and slab, the coefficient of static fraction is 0.60, and 0.40 is the coefficient of kinetic friction. A horizontal force of 100 N is applied to the block (on top of slab). What are the resulting accelerations of the block and slab? You must draw pictures and Free Body Diagrams to get full credit.
4) A student wants to determine the coefficients of static friction and kinetic friction between a box and a plank. She places a box on the plank and gradually raises one end of the plank. When the angle of inclination with the horizontal reaches 30°, the box starts to slip, and it then slides 2.5 m down the plank in 4.0 s at constant acceleration. What are (a) the coefficient of static fraction and (b) the coefficient of kinetic fraction between the box and the plank? You must draw pictures and Free Body Diagrams to get full credit.
Suppose that the amplitude and frequency of the transverse wave, Find the total vertical distance (in cm) through which the colored dot moves in 3.8 s
questiona. draw one diagram showing plan view footprint of the building and nearby obstacles and others showing the
an l-r-c circuit has an inductance of 0.480 h a capacitance of 2.60times10-5 f and a resistance of r.a what is the
A sled and rider with a combined weight of 63 kg are at reston the top of a hill 11 m high. What is their total ebergy at the top of the hill ?
Mandy is walking at a speed of 1.37 m/s directly toward one siren and directly away from another siren when they both begin to sound with a frequency of 650 Hz
In astronomy, a parsec ( pc) is de ned as the distance at which an object with a size of 1 astronomical unit (AU) would subtend an angle of 1 arc-second
A frictionless plane is 10.0 m long and inclined at 34.0°. A sled starts at the bottom with an initial speed of 5.90 m/s up the incline. find the distance that the first sled traveled up the incline
A juggler performs in a room whose ceiling is a height 4.0m above the level of his hands. He throws a ball upward so that it just reaches the ceiling. What is the time required for the ball to reach the ceiling
Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 11 g and the mass of ice is 53 g
Two 5.3cm x 5.3cm metal plates are separated by a 0.20--thick piece of Teflon. What is the maximum potential difference between the disks
A block of mass m= .6 kg is attached to a spring with a natural frequency of oscillation f= 1.45 Hz. What is the angular frequency of this oscillator
What will be the equilibrium temperature when a 262 g block of copper at 276°C is placed in a 175 g aluminium calorimeter cup containing 813 g of water at 12.9°C?
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