A 15.0 kg child descends a slide 2.8m high and reaches the bottom with a speed...
Homework Answers
By conservation of energy...
PE = KE + Thermal Energy
mgh = .5mv2 + TE
(15)(9.8)(2.8) = (.5)(15)(2.3)2 + TE
Thermal Energy = 372 J
Add Answer to:
A
15.0 kg child descends a slide 2.8m high and reaches the bottom
with a speed...
A 18.0 kg child descends a slide 2.30 m high and reaches the bottom with a...
A 18.0 kg child descends a slide 2.30 m high and reaches the bottom with a speed of 1.90 m/s . How much thermal energy due to friction was generated in this process?
if the child reaches the bottom of the slide with a speed of 7.6m/s what is...
if the child reaches the bottom of the slide with a speed of 7.6m/s what is the kinetic energy at the bottom of the slide? how much energy was lost? where did it go?
At a playground, a 19-kg child plays on a slide that descends a total of 2.3...
At a playground, a 19-kg child plays on a slide that descends a total of 2.3 meters (vertically). The child starts out at rest at the top of the slide. During the child’s descent, friction does -361 J of work on the child. What speed does the child have at the bottom of the slide?
A 18 kg child slides down a 4.0 m-high playground slide
A 18 kg child slides down a 4.0 m-high playground slide. She starts from rest, and her speed at the bottom is 2.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?
A 29.00-kg child initially at rest slides down a playground slide from a height of 3.10...
A 29.00-kg child initially at rest slides down a playground slide from a height of 3.10 m above the bottom of the slide. If her speed at the bottom is 2.40 m/s, how much energy is lost due to friction?
A 20 kg child slides down a 3.0-m-high playground slide. She starts from rest, and her...
A 20 kg child slides down a 3.0-m-high playground slide. She starts from rest, and her speed at the bottom is 1.7 m/s. What is the change in thermal energy of the slide and the seat of her pants? What is the change in thermal energy of the slide and the seat of her pants?
30-kg child slides down a playground slide as shown below. At the bottom of the slide,...
30-kg child slides down a playground slide as shown below. At the bottom of the slide, the speed of the child is 1.0 m/s. How many joules of internal energy were gained by the child and slide along the way? 2.5 m 30°
10.you are asked to design a friction-less playground slide such that the speed a child reaches...
10.you are asked to design a friction-less playground slide such that the speed a child reaches at the bottom does not exceed 19 m/s. determine the maximum height (in meters) that the slide can be.
A 40-kg child slides down a curved slide starting at the top with an initial speed...
A 40-kg child slides down a curved slide starting at the top with an initial speed of 4 m/s. (a) Suppose that the slide is frictionless. Determine the speed of the child when she is 3 m below her starting height. (b) Suppose that the slide has friction. Determine the speed of the child when she is 5 m below her starting height if she starts from rest and 300 J of thermal energy is dissipated during the motion.
A 23 kg child slides down a 2.2-m-high playground slide. She starts from rest, and her...
A 23 kg child slides down a 2.2-m-high playground slide. She starts from rest, and her speed at the bottom is 2.0 m/s.What is the change in thermal energy of the slide and the seat of her pants? Express your answer with the appropriate units.
30-kg child slides down a playground slide as shown below. At the bottom of the slide, the speed of the child is 1.0 m/s. How many joules of internal energy were gained by the child and slide along the way? 2.5 m 30°
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago