• Ineed fast help for my exam please?

    Your answer: 
    When a flea (m = 450 μg) is jumping up, it extends its legs 0.5 mm and reaches a speed of 0.40 m/s in that time. Part A How much work did the flea do during that time? Use g = 10 m/s2 How much work did the flea do during that time? Use = 10 3.8×10−2 mJ 3.8×10−5 mJ 3.6×10−5 mJ 2.3×10−6 mJ
    3 weeks ago
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  • Two masses, 4.0 kg and 6.0 kg, are connected by a rope over a frictionless pulley as pictured in the diagram.The ramp is inclined at 30.0º.?

    Your answer: 
    Determine the minimum coefficient of static friction that will prevent this system from moving assuming the natural tendency of the system is for the 4.0 kg block to slide down the incline. Include FBD’s of both masses (4 marks)THE MASS OF THE ROPE IS NOTHING
    3 weeks ago
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  • Web assign physics?

    Your answer: 
    Homer catches a donut that has a mass of 0.21-kg using a force of 141 -N to stop the donut so he can eat it. If the donut was traveling at a speed of 6 m/s right before it Homer stuck out his hand, how long is s did it take to come to a complete stop?
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  • Forces question?

    Your answer: 
    24. A three-tiered birthday cake rests on a table. From bottom to top, the cake tiers weigh 16 N, 9 N, and 5 N, respectively. What is the magnitude and direction of the normal force acting on the second-tier?
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  • Physics help... 2 questions?

    Your answer: 
    Gordie hits a stationary hockey puck that has a mass 0f 0.4 kg with a force of 1208 N. If the puck moves towards the net with a speed of 30 m/s, how long in sec was the stick in contact with the puck? A pitcher throws a ball with a velocity of 21 m/s. An intrepid softball player who also happens to be taking physics hits the ball so that leaves... show more
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  • A spring with a force constant of 89 N/m is compressed 8.7 cm and placed between two stationary carts of mass 1.0and 1.5 .No friction?

    Your answer: 
    2. A spring with a force constant of 89 N/m is compressed 8.7 cm and placed between two stationary dynamics carts of mass 1.0 kg and 1.5 kg. If friction is negligible, determine the final speed of the more massive cart when the spring is released. (4 marks)
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  • Please help asap please?

    Your answer: 
    If the man jumps with his knees and an- kles locked, the only cushion for his fall is approximately 0.44 cm in the pads of his feet. Calculate the magnitude of the average force exerted on him by the ground in this situation. Answer in units of N.
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  • Physics Help!?

    Your answer: 
    A 1.0 kg object is attached to a string 0.50 m. It is twirled in a horizontal circle above the ground at a speed of 5.0 m/s. What is the magnitude of the centripetal force acting on the object? (5 points) 2.5 N 10. N 25 N 50. N
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  • Physics help?

    Your answer: 
    A car starts from rest and travels for 7.4 s with a uniform acceleration of +2.2 m/s2 . The driver then applies the brakes, causing a uniform deceleration of 1.8 m/s2 . If the brakes are applied for 2.4 s, how fast is the car going at the end of the braking period? Answer in units of m/s. How far has it gone from its start? Answer in units of m
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  • An object is placed 30cm in front of a concave lens which has a focal length of 10cm. Determine the position of the image formed?

    Your answer: 
    I did 1/u + 1/v = 1/f 1/30 + 1/v = 1/10 1/v = 1/10 - 1/30 = 1/15 v = 15cm How come the answer is -7.5cm?
    3 weeks ago
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  • What is simple pendulum?

    Your answer: 
    3 weeks ago
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  • A rope pulls a 72.5 kg skier up...?

    Your answer: 
    A rope pulls a 72.5 kg skier up a 21.7 degrees slope with mu = 0.120. The rope is parallel to the slope, and exerts a force of 383 N. What is the acceleration of the skier?
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  • Physics refraction?

    Your answer: 
    https://imgur.com/a/iUsMR Answer is 11.35cm n = (real depth)/(apparent depth) = sin i/sin r I'm really stuck. Thanks.
    3 weeks ago
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  • Mi serve aiuto per risolvere questo problema di fisica?

    Your answer: 
    La molecola del difluoruro di ossigeno OF2 è una molecola polare poiché la carica al suo interno è distribuita in maniera asimmetrica. La distanza tra il centro dell'atomo di ossigeno e il centro ciascun atomo di fluoro è di circa 140,5 pm e l'angolo formato è di 103°. Quanto misura la distanza tra i 2 centri dei 2 atomi di fluoruro? [220... show more
    3 weeks ago
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