a flea gains 1.0x10^-7 J of PE jumping up to a height of .030 m from a dog's back. What is the...

Question

Question

a flea gains 1.0x10^-7 J of PE jumping up to a height of .030 m from a dog's back. What is the mass of the flea?

science physics

Answer 1

Answer #1

PE= mgh

1.0x10^-7 J= m (9.81m/s2)(.03m)

m= 3.398X10^-7 kg

answered by: red rox

Answer 2

Answer #2

mgh = gain in PE
=> m = 10^-7 /(9.8x0.03) = 3.4x10^-7 kg

answered by: sreekanth

Answer 3

Similar Homework Help Questions

Fleas have remarkable jumping ability. A 0.40 mg flea, jumping straight up, would reach a height...

Fleas have remarkable jumping ability. A 0.40 mg flea, jumping straight up, would reach a height of 35 cm if there were no air resistance. In reality, air resistance limits the height to 20 cm . A) What is the flea's kinetic energy as it leaves the ground? K = 1.37×10−3 mJ Part B At its highest point, what fraction of the initial kinetic energy has been converted to potential energy? Express your answer using two significant figures. f =...
A flea jumps straight up to a maximum height of 0.500 m . How long is...

A flea jumps straight up to a maximum height of 0.500 m . How long is the flea in the air from the time it jumps to the time it hits the ground? (I figured out initial velocity was 3.13 m/s)
A particular cat flea (Ctenocephalides felis) has a mass of 5.0 x 10kg. Like most fleas,...

A particular cat flea (Ctenocephalides felis) has a mass of 5.0 x 10kg. Like most fleas, this one can jump many times higher than its own height. When jumping, it accelerates from rest through a distance of 0.40 mm, which allows it to reach a launch speed of 1.2 m/s, directed straight up. Use g = 9.8 m/s. [2 points] (a) Assuming constant acceleration, calculate the magnitude of the flea's acceleration while it is accelerating upward. [2 points] (b) For...

4./Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m...

4./Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. Her bungee cord has an un-stretched length of 50 m and a spring constant k - 600 N/m. Lola has a mass of 48 kg. How fast is she falling when she just starts to stretch the cord? How long does it take for Lola to reach this point? a) Lola stretches the bungee cord and it brings her to a...
Part A f a flea can jump straight up to a height of 21.7 cm, what...

Part A f a flea can jump straight up to a height of 21.7 cm, what is its initial speed as it leaves the ground, neglecting air resistance? U initial m/s Part How long is it in the air? Part C What is the magnitude of its acceleration while it is moving upward? m/s Submit Request Answer Part D What is the direction of its acceleration while it is moving upward? Submit ▼ Part E Submit Part E What is...
M 7 A mass M = 1.2 kg is released from rest. From the initial height...

M 7 A mass M = 1.2 kg is released from rest. From the initial height of 75 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 590 N/m The maximum compression of the spring, due to the impact of the dropping mass is sh = 160 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the ground level as...

a ball whose mass is .35 kg falls from rest through a height of 5.3 m...

a ball whose mass is .35 kg falls from rest through a height of 5.3 m and then bounces back. it reaches a maximum height of 3.8 m after the bounce before falling to the ground again. from the beginning at 5.3 m to the height of 3.8 m after the bounce. the magnitude of its mechanical energy has changed by a) zero b) 13.0 J c) 0.52 J d) 5.15 J
P5 An iron sphere is thrown straight up from a height of 2 m with a...

P5 An iron sphere is thrown straight up from a height of 2 m with a velocity of 0.3 m/s. It falls back to ground and bounces. After the bounce, it momentarily comes to a stop at a height of 1.9 m, where it is caught. (a) What is the speed of the ball when it first reaches the ground? b) What is its speed when it just leaves the ground after the bounce? (c) Neglecting the time of the...
7.A ball is thrown straight up from waist height. After travelling up for a short distance...

7.A ball is thrown straight up from waist height. After travelling up for a short distance it reverses direction and then comes back down and hits the ground. At which of the following times was its velocity zero? A. When the ball leaves the hand B. At its highest point C. When it returns to the height from which it was originally thrown D. Just before it hits the ground

Q1. A ball of mass 60 g is dropped from a height of 3.4 m. It...

Q1. A ball of mass 60 g is dropped from a height of 3.4 m. It lands on the top of a frictionless ramp at height 1.8 m. The ramp is tilted at an angle of 20 degrees. (a) What is the velocity of the ball at the top of the ramp? (b) At the bottom of the ramp it collides with and sticks to a ball of mass 73 g. What is their velocity after the collision? (c) The...