# What is the kinetic energy of a 29 kg dog that is running at a speed of 7.9 m/s (about 18 mi/h)?

45,322 questions, page 68
1. ## Physics

A 96.0-g wooden block is initially at rest on a rough horizontal surface when a 11.4-g bullet is fired horizontally into (but does not go through) it. After the impact, the block–bullet combination slides 6.5 m before coming to rest. If the coefficient

asked by Pilar on March 5, 2014
2. ## Physics

A 96.0-g wooden block is initially at rest on a rough horizontal surface when a 11.4-g bullet is fired horizontally into (but does not go through) it. After the impact, the block–bullet combination slides 6.5 m before coming to rest. If the coefficient

asked by Trevor on March 4, 2014
3. ## chemistry

One-third cup of vanilla ice cream provides about 145kcal of energy. A typical adult uses about 195kcal/hr of energy while walking. If all of the enrgy in one third of a cup of valilla ice cream were to be burned off by walking, how many minutes would it

asked by carol on November 26, 2012
4. ## Physics

One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour. A kilowatt-hour is the unit of energy used by power companies when figuring your electric bill. Determine the number of joules

asked by Candy on February 29, 2012
5. ## Math

Ethel collects animal stickers.She has 30 cat stickers,15 horse stickers,19 dog stickers and 11 rabbit stickers. One third of the horse stickers are round and the rest are square. One fifth of the cat stickers are square and the rest are round. All the dog

asked by Shane on July 27, 2017
6. ## English

I am writing a 300 word short story(or a "'personal' narrative essay") for the prompt: lessons we learn affect one's future. So far I have a general idea: I want the lesson to be loyalty and truth and I want the effect to be that the character would learn

asked by Anna on June 21, 2015
7. ## Physics

A box is sliding up an incline that makes an angle of 15.0 degrees with respect to the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.180. The initial speed of the box and the surface of the incline is

asked by Matoro on December 8, 2012

A 16kg sled starts up a 28 degree incline with a speed of 2.4m/s . The coefficient of kinetic friction is = 0.27. part a)How far up the incline does the sled travel? part b)What condition must you put on the coefficient of static friction if the sled is

asked by julie on May 24, 2012
9. ## physics

A 20kg block is initially at rest on a rough, horizontal surface. A horizontal force of 75N is required to set the block in motion. After it is in motion, a horizontal force of 60N is required to keep the block moving with constant speed. Find the

asked by kmae on March 6, 2014
10. ## Physics

An Electricity account shows that a household has used 1400 units of electrical energy during a three month period. Calculate : a)the number of joules of energy used in this time. b)the average number of joulesof energy used perday . c)the average power

asked by Nelly on June 1, 2011
11. ## Physics

An Electricity account shows that a household has used 1400 units of electrical energy during a three month period. Calculate : a)the number of joules of energy used in this time. b)the average number of joulesof energy used perday . c)the average power

asked by Nelly on June 2, 2011
12. ## physics

A stewardess pulls her 70 N flight bag a distance of 200 m along an airport floor at constant speed. The force she exerts is 40 N at an angle of 50 degrees above the horizontal. Find (a) the work she does, (b) the work done by the force of friction, and

asked by Anonymous on October 22, 2007
13. ## physics

A pick up truck travelling at constant speed begins to accelerate at 1.5m/s squared for 6 seconds, by which times it has reached a speed of 20m/s. What was its original speed?

asked by Poppy Proasheck on February 25, 2013
14. ## math

The Danville Epress travels 280mi at a certain speed.If the speed had been increased by 5mph the trip could have been made in 1 hour less time.Find the actual speed.

asked by Nicole on February 15, 2011
15. ## Math

Marie traveled to work (7km) in 25 minutes. What was her speed? I got 16.8km/h but my teacher said it's 28km/h and I have no idea how he got that. Also, how do you calculate average speed when there's more than one speed? (this is just for the next

asked by Emily on June 13, 2016
16. ## Math

The Danville Epress travels 280mi at a certain speed.If the speed had been increased by 5mph the trip could have been made in 1 hour less time.Find the actual speed.

asked by Nicole on February 15, 2011
17. ## Physics

If you increase the angle of inclination, does the kinetic friction an object experiences while moving down this inclination increase? I was thinking since Kinetic friction= coffient of friction * Normal force that it does not change, since the coefficient

asked by sam on October 21, 2009
18. ## Physics

The system of blocks of masses m1=3kg and m2 = 1.80 kg are connected by a string as shown. Mass m rests on a rough surface of unknown coefficient of kinetic friction. After the masses are released, they move with an acceleration of 2.80 m/s^2 (m1 moves to

asked by Matt on February 20, 2007
19. ## Motion equation

A stone, which weighs 0.62kg, is thrown, at 5.5ms, its kinetic energy at its maximum height above the surface is 2.3J, what is the height of the stone at this point? Any eqautions or advice gratefully received. I assume that is 5.5 m/s, the initial

asked by Mac on December 17, 2006
20. ## physics

A mover pushes a 4.21 kg box with a 36.6 N constant horizontal force up a 10.0° ramp that has a height of 1.57 m. If the ramp is assumed to be frictionless, find the speed of the box as it reaches the top of the ramp using work and energy.

asked by Anonymous on November 12, 2018
21. ## physics

Draw energy graph of the reaction where energy reaction is 1kg mol-1 the energy of the product is 50kg mol-1 and the activation is 50kg mol-1.state whether reaction is exothermic o endothermic

asked by nokwanda on August 23, 2014

Why is the following situation impossible? A librarian lifts a book from the ground to a high shelf, doing 20.0 J of work in the lifting process. As he turns his back, the book falls off the shelf back to the ground. The gravitational force from the Earth

asked by Anya on December 8, 2012
23. ## physics- TEST TMRW PLS HELP!

Why is the following situation impossible? A librarian lifts a book from the ground to a high shelf, doing 20.0 J of work in the lifting process. As he turns his back, the book falls off the shelf back to the ground. The gravitational force from the Earth

asked by Anya on December 9, 2012
24. ## Math

A rubber ball is thrown straight down from a height of 244 feet at speed of 80 feet per second. If the ball always rebounds with one-fourth of its impact speed, what will be the speed of the ball the third time it hits the ground? My Answer is: 1/4*80=60

asked by Zach on May 6, 2013
25. ## Calculus

The fuel efficiency, E, in litres per 100 km, for a car driven at speed v, in km/h is E(v)=1600v/(v^2+6400). a) Determine the legal speed speed that will maximize the fuel efficiency if the speed limit is 50 km/h. The answer is 50 km/h but my teacher said

asked by Jake on March 4, 2012
26. ## Physics

Correctly identify what will happpen in the following situations. An object falling straight down at a speed higher than its terminal speed An object falling straight down at its terminal speed An object at the peak of its trajectory after being thrown

asked by Cameron Lawrence on August 29, 2018
27. ## Chem

The brilliant color of fireworks is produced by shells containing lithium carbonate (Li2CO3) that are launched into the night sky and explode. The explosions produce enough energy to vaporize the Li2CO3 and produce excited state lithium atoms. These atoms

asked by Charles on December 13, 2017
28. ## english

What are some abstract word for 1.quaterback 2.scream 3.perfume 4.pepper 5.bruise 6.dog 7.binoculors 8.teeth 9.lamb 10.book

asked by libra1017 on January 6, 2011
29. ## english gr 9

Can you please tell me a theme statement for curious case of the missing dog in the night-time by Mark Haddon. I have an exam on monday...

asked by clueless on January 22, 2010
30. ## Math

You have 2 hundred feet of fencing to use for building a rectangular dog pen. find the dimensions of the pan having the greatest possible area

asked by Courtney on June 4, 2014
31. ## algebra

A man wants to build a rectangular pen in which to keep his dog. If he uses one side of his barn, what is the maximum area that he can enclose with 80 meter of fencing?

asked by ana on March 15, 2011
32. ## algebra-i post the words that i need to fit toget

What catastrophes makes ur kitten happy? I need to fit all this words together: LET, CHAIN, THE , HAVE, CAT, CRY, ONE,OUT, OVER , LITTLE, DOG, SPILT, NEW, OUTSIDE, MILK, OLD.

asked by Gary on October 24, 2007
33. ## grammar

after graduating from te dog acadeny wivues decide to stat is own rock and roll band identify declarative or interrogative

asked by Anonymous on March 3, 2011
34. ## ART

What helps you see the shape of the dog easily? 1. Perspective 2. Textures present 3. Positive/negative space 4. Line usage

asked by HISHE on March 5, 2019
35. ## English

Tommy and his dog were looking for the burid treasure.They saw brown box and then they heard a voice behind them... continue writing and make up the story

asked by Sue on November 28, 2015
36. ## Applied Ethics

How do I hypothesize Contracturalism for a vet who needs to get a certain breed of dog for his daughter with allergies, but would prefer to adopt rather than purchase one from a puppy mill?

asked by JL on April 2, 2012
37. ## LA

Rewrite using a possessive noun: the (separate) bikes of Keith and Frank, the brooms of the witches, and the dog of Mike and Erin

asked by Andy on January 11, 2017
38. ## English

Which of the following is a phrase fragment? A) Since the weather forecast is beautiful this weekend. B) Let's ask our parents if we can go tubing. C) Did you just say that? D) A great dog, thatâ€™s what we have! I can't determine if it's A or C.

asked by Tyto on January 11, 2014
39. ## physics

A 220 N crate is pushed along the ground with a horizontal force. The coefficient of kinetic friction is 0.21 and the coefficient of static friction is 0.31. The crate moves at a constant speed of 4.1 m/s. a) Draw a free-body diagram for the crate. b) What

asked by Kelsey on November 15, 2011
40. ## Physics

A block with mass m1 on a plane inclined at angle  to the horizontal is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley, as shown. The coefficient of static friction is us and the coefficient of

41. ## physics

A police van moving on a highway with a speed of 30km/hr, fires a bullet at a theif's car speeding away in the same direction with a speed of 192km/hr. If the muzzle speed of the bullet is 150m/sec. With what speed does the bullet hit the thief's car

asked by Aarathana on November 28, 2016
42. ## Biomechanics

An 88.9 kg weight lifter is required to perform a snatch movement for their final lift in a weight lifting competition. The standard weight lifting bar is 20 kg and the load attached to the bar was in the form of 6 x 20 kg weight discs, 2 x 10 kg weight

asked by Chleo on May 7, 2012
43. ## Physics

A satellite made of aluminum with mass 3500 kg travels on circulated path in 100 km height over the earth. Because of airresistance of the airveil the satellite loses energy and falls in a spiral down to earth. a) What is the mechanical energy of the

asked by Amber on November 17, 2011
44. ## Maths

A car traveled from A to B at a speed of 15 km/h and return at a speed of 30 km/h. Find the average speed for the whole journey.

asked by Jones on July 27, 2015
45. ## Student Council ASAP GRAMMAR

Again sorry about that in this section it says "You must complete the statement below regarding your interpretation of the responsibilities of the office for which you are candidate of. This statement must be turned in at the election meeting." and I gives

asked by unknown on September 17, 2013
46. ## Chemistry

There are three isotopes of phosphorus. Only one of them is stable. Calculate the binding energy per nucleon (in MeV) for P-32 (atomic mass = 31.9739 u). mass H = 1.007825 u and mass n = 1.008665 u. I multiplied the protons(15) by the mass H, and the

asked by JUNDY on April 30, 2015
47. ## chemistry

MF015 59 What is the acid dissociation constant for HA if pH = 2.74? [HA] = 0.020M? MF12063: What is the minimum energy barrier that musts be overcome for a chemical reaction to occur? is it the activation energy? yes

asked by sam on May 1, 2007
48. ## Science

Which part of an electric circuit resists the flow of charge when it changes electrical energy into other forms of energy? A. battery B. copper wires C. switch D. light bulb

asked by bubbie on March 26, 2013
49. ## physcial science

A device that changes mechanical energy to electrical energy by rotating a coil of wire through a magnetic field is called a(an) A. transformer. B. generator. C. electromagnet. D. current meter.

asked by sid on October 20, 2015
50. ## ap chemistry

What amount of energy is required to com- pletely ionize 26.9 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

asked by cheri on April 15, 2013
51. ## Chemistry

What amount of energy is required to completely ionize 21.5 grams of carbon atoms in the gas phase (C(g)) if the ionization energy of C(g) is 1086 kJ/mole? Answer in units of J

asked by Peter on October 17, 2012
52. ## Physics

Find the energy (in joules) of the photon that is emitted when the electron in a hydrogen atom undergoes a transition from the n=7 energy level to produce a line in the Paschen series.

asked by Jenny on September 11, 2008
53. ## science

The outcome of the Calvin Cycle is A)synthesis of sugars B)Production of pyruvate C)Capture of energy from sunlight D)Breakdown of complex molecules and the subsequent release of energy

asked by bailey on October 5, 2014
54. ## Physics

Two masses, m1 = 25.0 kg and m2 = 45.0 kg, are attached by a massless rope over a massless pulley. The angle of the frictionless incline is α = 27.00. Assume that m2 starts at rest and falls a vertical distance of 3.00 m. Assume m1 also starts at rest and

asked by Cheese on October 8, 2014
55. ## physics

a) A set of crash tests consists of running a test car moving at a speed of 12.6 m/s (27.7 m/h) into a solid wall. Strapped securely in an advanced seat belt system, a 69.0 kg (151.8 lbs) dummy is found to move a distance of 0.600 m from the moment the car

asked by Katie on February 27, 2012
56. ## Physics

A 4.8‒kg block on a 39° inclined plane is acted on by a horizontal force of 46 N as shown below. The coefficient of kinetic friction between the block and the plane is 0.33. (a) What is the acceleration of the block if it is moving up the plane? (b)

asked by Chrxeyshthoufov on February 23, 2014
57. ## science

potential energy is energy of _______ or chemistry?

asked by Colin on November 6, 2008
58. ## science

is all light energy solar energy? explain

asked by ahsly on January 22, 2009
59. ## home ec

when energy input is equal to energy output!

asked by lisa on September 5, 2009
60. ## Science

what are the similarities between thermal energy and electrical energy

asked by Aira Orbeso on February 14, 2017
61. ## Science

What kind of energy is transferred in an energy pyramid

asked by M on April 7, 2015
62. ## home ec!

when energy input is equal to energy output?

asked by lisa on September 5, 2009
63. ## home economics

when energy input is equal to energy output?

asked by lisa on September 5, 2009
64. ## science

where can i get pictures of muscular energy and wind energy?

asked by joken on March 15, 2012
65. ## biology

In every energy transactions, some of the energy is also lost as heat.

asked by clarissa on April 16, 2011
66. ## Science

Electrical energy can be converted to heat energy

asked by Judith on October 25, 2016
67. ## electrical

Energy exists in different forms. Name two kinds of energy

asked by john on October 31, 2009
68. ## Science

How do you identify energy may be dissipated in such an energy conversion?

asked by Katya on September 4, 2017
69. ## science

what is the difference between radiant energy and thermal energy?

asked by warren on September 30, 2009
70. ## Science

Electrical energy can be converted to heat energy

asked by Judith on October 25, 2016
71. ## soc 207

However, do you feel wind energy alone will be able to provide for our energy needs.

asked by tamika on July 7, 2011
72. ## Essay Evaluation (Writeacher)

Prompt: Explain the relationship between Lennie and George. How does George take responsibility for his companion? Explain how George show loyalty and compassion by taking Lennie's life. I haven't written much, so here's my first body paragraph. It

asked by Victoria on June 9, 2016
73. ## Physics

A diver jumps off a dving board and does a twisting manuever. In the midst of his jump in the air, the diver cannot change his a. Rotational Energy b. Rotational Speed c. Rotational Inertia d. Angular momentum I say d just want to make sure

asked by David on April 28, 2009
74. ## Physics

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c.

asked by Collin on February 7, 2012
75. ## Physics!

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c.

asked by Collin on February 7, 2012
76. ## Physics!

Two metal spheres with masses 4.0 g and 6.0 g are tied together with 6.0 cm long massless string and are at rest on a frictionless surface. Each sphere is charged to + 5.0 nC. a. What is the energy in the system? b. What is the tension in the string? c.

asked by Collin on February 7, 2012
77. ## physics

A solid uniform sphere is released from the top of an inclined plane .25 m tall. the sphere rolls down the plane without slipping and there is no energy lost from friction. What is the translational speed of the sphere at the bottom of the incline?

asked by Anonymous on April 30, 2014
78. ## physics

A diver has a mass of 75 kg takes part in a competition by having to perform 10 dives off the 10m platform above the water. Before he takes part he snacks on an energy bar (150 g) which provides 15 kj of energy. How many would the diver need to consume to

asked by william on February 20, 2012
79. ## ela

1. Which of the following is not part of the rising action in "Raymond's Run"? (1 point) A. Squeaky and Raymond confront Mary Louise and her friends on Broadway. *** B. Mr. Pearson hints to Squeaky that she should consider letting the new girl win. C.

asked by olivia on September 16, 2016
80. ## science

A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.75 m above the bottom of the chute and with an initial speed of 1.07 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a

asked by Lola on November 19, 2015
81. ## Physics

A block of mass M rests on a block of mass M1 = 5.00 kg which is on a tabletop. A light string passes over a frictionless peg and connects the blocks. The coefficient of kinetic friction mk at both surfaces equals 0.330. A force of 46.0 N pulls the upper

asked by mike on September 23, 2018
82. ## Physics/Science

A 57-gram tennis ball moving at 70 miles per hour is hit with a 110-gram tennis racquet moving at 60 miles per hour. Which statement best compares the total amounts of mass and energy before and after impact? A. Because the velocities of the ball and

asked by Klauus on May 10, 2019
83. ## Physics

Can anyone please help me with this question? I don't understand why the speed is v m/s. A sport utility vehicle is travelling at a speed of v m/s. If its momentum has a magnitude of 32,800 kg·m/s, what is the SUV's mass? Thanks I know that I have to use

asked by Kathy on May 2, 2013
84. ## Physics (Momentum)

Can anyone please help me with this question? I don't understand why the speed is v m/s. A sport utility vehicle is travelling at a speed of v m/s. If its momentum has a magnitude of 32,800 kg·m/s, what is the SUV's mass? Thanks I know that I have to use

asked by Kathy on May 2, 2013
85. ## English

1. Our lives would be different without energy. 2. Our lives would be different if we didn't have energy. 3. Our lives would be different if there were no energy. ---------------------------- Does #1 mean #2 and #3? Are they the same in meaning and

asked by rfvv on November 4, 2014
86. ## Physics

if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step by step help please? asap. thanks, michelle . physics - bobpursley, Saturday, November 20, 2010 at 4:06pm power= work/time=

asked by michelle quendarsv on November 20, 2010
87. ## Physics

When would instantaneous speed be the same as average speed? would it be when the speed is constant? when the position changes linearly with time or would it be in the limit when the time interval goes to zero? I thought it would be when the speed is

asked by Katie on September 5, 2011
88. ## Physics

A 279 N force is pulling an 75.9-kg refrigerator across a horizontal surface. The force acts at an angle of 26.3 ° above the surface. The coefficient of kinetic friction is 0.259, and the refrigerator moves a distance of 9.14 m. Find (a) the work done by

asked by Candy on February 27, 2012
89. ## physics

A crate slides down a ramp inclined at 26.0° from the horizontal. The normal force of the ramp on the crate is 710 N and the coefficient of kinetic friction between the crate’s bottom and the ramp’s surface is 0.330. Find the magnitude of the force of

asked by ahan on October 18, 2011
90. ## Physics

In the lab, a relativistic proton has a momentum of 1.00 ×10^-19 kg ∙ m/s and a rest energy of 0.150 nJ. What is the speed of the proton in the lab? (c = 3.00 × 10^8 m/s, mass of proton = 1.67 ×10^-27 kg)

asked by Tess on September 21, 2014
91. ## physics

In the lab, a relativistic proton has a momentum of 1.00 × 10-19 kg · m/s and a rest energy of 0.150 nJ. What is the speed of the proton in the lab? (c = 3.00 × 108 m/s, m proton = 1.67 × 10-27 kg): *

asked by Anonymous on February 8, 2015
92. ## Physics

In the lab, a relativistic proton has a momentum of 1.00 ×10^-19 kg ∙ m/s and a rest energy of 0.150 nJ. What is the speed of the proton in the lab? (c = 3.00 × 10^8 m/s, mass of proton = 1.67 ×10^-27 kg)

asked by Khaled on September 20, 2014
93. ## phys

Two blocks of mass m1 = 1.70 kg and m2 = 5.20 kg are connected by a massless cord passing over a frictionless pulley as shown in the figure below, with θ = 41.0°. The coefficient of kinetic friction between block 1 and the horizontal surface is 0.400,

asked by victpr on October 1, 2016
94. ## science

Which of the following properties of water explains its characterization as the universal solvent? Which of the following properties of water explains its characterization as the universal solvent? A. Kinetic energy of liquid water molecules B. High

asked by wedi on June 9, 2015
95. ## Mechanics

Two blocks with masses m1 = kg and m2 = kg are connected by a string that hangs over a pulley of mass M = kg and radius R = m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the speed of m2 after it

asked by Costa on December 3, 2011
96. ## Physics

A constant torque of 22.9 N·m is applied to a grindstone whose moment of inertia is 0.168 kg·m2. Using energy principles, and neglecting friction, find the angular speed after the grindstone has made 17.1 rev, assuming it started from rest. Answer in

asked by dallas on April 2, 2013
97. ## Chemistry

Find the energy( in KJ) of a wave with the wavelength of 507 nm. First, I turn the 507 nm into meter then divide the speed of light by it which give me the frequency. Then I take the frequency and multiply by the planck. Then I would convert the Joule to

98. ## Science

Two blocks with masses m1 = 3.9 kg and m2 = 6.7 kg are connected by a string that hangs over a pulley of mass M = 2.2 kg and radius R = 0.11 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the

asked by John on November 30, 2011
99. ## Physics

Two blocks with masses m1 = 3.9 kg and m2 = 6.7 kg are connected by a string that hangs over a pulley of mass M = 2.2 kg and radius R = 0.11 m as shown above. The string does not slip. Assuming the system starts from rest, use energy principle find the

asked by John on November 28, 2011
100. ## college physcs

A 0.150 block moving vertically upward collides with a light vertical spring and compresses it 4.50 before coming to rest. If the spring constant is 54.0 , what was the initial speed of the block? (Ignore energy losses to sound and other factors during the

asked by Ramon on December 17, 2009