Write an expression for the normal force

Assignment Help Physics
Reference no: EM13274778

An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v=5.5m/s in the positive x direction. The coefficient of kinetic friction between the skates and the ice is u_k=.19.

a.) Write an expression for the normal force, F_n, that the ice pushes against both skates together. Assume the skater's mass is m.

b.) Using the expression for normal force, write an expression for the skater's acceleration in the x direction, a.

c.) How long, t_h in seconds, will it take for the skater's velocity to drop by half?

d.) How far, d_h in meters will the skater travel during the time t_h?

Reference no: EM13274778

Questions Cloud

Determine the mass of the star : Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the mass of the star
Design a circuit that lets exactly one full negative pulse : Design a circuit that lets exactly one full negative pulse (from an input train of pulses) pass through to the output, after a button is pushed.
Explain a free radical-chain polymerization reaction : explain why only a catalytic amount of the radical initiator is required in a free radical-chain polymerization reaction
What are the impulse responses for the 4 matched filters : a. Draw the block diagram for a coherent receiver for QPSK using the same basis signals as in problems ("What frequency must be used for basis symbols f1 = sin(pi*ct) and f2 = cos(pi*ct) with a symbol period of 1/(9600Hz) to contain 6 cycles of th..
Write an expression for the normal force : An ice skater is traveling in a straight, horizontal line on the ice with a velocity of v=5.5m/s in the positive x direction. Write an expression for the normal force, F_n, that the ice pushes against both skates together
Explain how much heat in kj is evolved in converting : How much heat (in kJ) is evolved in converting 1.00 mole of steam at 145 C to ice at 0 C)? (The heat capacity of ice is 2.09 J/g C and the heat of vaporization of water is 32.9 kJ/mol)
Find the magnetic field at the center of the solenoid : Solenoids produce magnetic fields that are relatively intense for the amount of current they carry. To make a direct comparison, Find the magnetic field at the center of the solenoid
Obtain the mathematical model of the opamp circuit : For a home toaster suggest a closed loop control scheme to control the amount of browning on the toast and obtain the mathematical model of the OPAMP circuit
How much power was applied to the block in watts : It takes a student t = 5.2 s to push a block m = 6 kg at a constant velocity over a distance of d = 4.6 m. How much power was applied to the block in Watts

Reviews

Write a Review

Physics Questions & Answers

  Calculate magnitude of the planes velocity

A 12.0 resistor, 10.0 mH inductor, and a 50.0 µF capacitor are connected in series to a 55.0 V (rms) source having variable frequency. Find out the energy delivered to the circuit during one period if the operating frequency is twice the resonance..

  What is the final velocity c

A chimp jumps up from a trampoline and lands on the ground, 1.2 meters below. the total time taken was .095 secons. A. what is the initial velocity B. what is the final velocity C. what is the maximum height above the ground please show work so i ..

  What is this maximum torque

A circular coil of wire 8.40cm in diameter has 16.0 turns and carries a current of 2.60A . The coil is in a region where the magnetic field is 0.580 T, What is this maximum torque in part (A)

  Find johnnys de broglie wavelength at this moment

Johnny Jumper's favorite trick is to step out of his high-rise window and fall 37.0 m into a pool. Find Johnny's de Broglie wavelength at this moment

  Calculate approximately by what percentage directly

A hiker's trip consists of three segments. Path A is 9km long heading 60.0° north of east. Path B is 6.0km long in a direction due east. Path C is 5.0 km long heading 315° counter clockwise from east.

  What is the oscillation frequency

find the radius of curvature of the vertical profile of the road at A. Using value of the curvature found, determine the force exerted on a 160-lb driver by the seat of his 3100-lb car as the car, traveling at a constant speed of 50 mi/h, passes t..

  Calculate the fundamental frequency

Two consecutive frequencies are 500 Hz and 540 Hz. ( Stringed instrument; closed-closed) Calculate the fundamental frequency

  How much work the power plant produces in a day

How much work the power plant produces in a day. How much energy is discarded to low temperature source in a day.

  Illustrate what is the magnitude of the energy dissipated

After 803 rev/min is achieved, the motor is disengaged. A friction brake is used to slow the rotational rate to 351 rev/min. Illustrate what is the magnitude of the energy dissipated as heat from the friction brake?

  What is the mean free path between collisions

A lottery machine uses blowing air to keep 2000 Ping-Pong balls bouncing around inside a 1.0m X 1.0m X1.0m box. The diameter of a Ping-Pong ball is 3.0 cm. What is the mean free path between collisions?

  Does the ball clear the fence for a homerun

A baseball player hits a ball towards the outfield with an initial velocity of 76.0 m/s at an angle of 45 relative to the ground. The outfield is 118 m away and is 4.0 m tall.

  What is the angular velocity of precession

A uniform disk of mass 0.70 kg and radius 7.0 cm is mounted in the center of a 10 cm axle and spun at 800 rev/min. The axle is after that placed in a horizontal position with one end resting on a pivot. The other end is given an initial horizontal..

Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd