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 57.4-kg skateboarder starts out with a speed of 2.04 m/s. He does 104 J of work on himself by pushing with his feet against the ground. In addition, friction does -212 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the skateboarder is 7.85 m/s.
(a) Calculate the change (PEf - PE0) in the gravitational potential energy.
(b) How much has the vertical height of the skater changed? Give absolute value.
A 9.0-g piece of Styrofoam carries a net charge of -.65, What is the charge per unit area on the plastic sheet
Three moles of an ideal monatomic gas expands at a constant pressure of 2.00atm ; the volume of the gas changes from 3.40×10?2m3 to 4.60×10?2m3. Calculate the amount of work the gas does in expanding
A car with a total mass of 1.92*10^3 kg has wheels of radius 31.0 cm and moment of inertia 0.830 kg · m2. What is the car's translational kinetic and rotational energy
Three deer, A, B, and C, are grazing in a field. Deer B is located 63.9 m from deer A at an angle of 51.4 ° north of west. What is the distance between deer A and C
A 61kg skydiver can be modeled as a rectangular "box" with dimensions 21cm x 37cm x 1.8m. What is his terminal speed if he falls feet first
A 300-kg load is hung on a wire of length 5.00 m, cross-sectional area 0.200 × 10-4 m2, and Young's modulus 8.00 × 1010 N/m2. What is increase in length of the wire
To clear the net, the ball must rise at least 0.294 m. If the ball just clears the net at the apex of its trajectory, explain how fast was the ball moving when it left the racquet?
A shoe store uses small floor-level mirrors to let customers view prospective purchases. At what angle from vertical must such a mirror be inclined so that a person standing 59 from the mirror with eyes 142 off the floor can see her feet.
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2?J · s. What is the minimum uncertainty in the duck's speed
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. calculate How fast are the waves traveling
A coil of wire is connected to an ideal7.00V battery att= 0. Att=10.0ms, the current in the coil is204mA. Find the resistance and inductance of the coil
A 60 kg bicyclist rides his 9.8 kg bicycle with a speed of 16 m/s. What is the magnitude of the braking force
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