# 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 231

When 50.0 mL of 1.0 mol/L hydrochloric acid is neutralized completely by 75.0 mL of 1.0 mol/L sodium hydroxide in a coffee-cup calorimeter, the temperature of the total solution changes from 20.2 to 25.6. Determine the quantity of energy transferred, q,

asked by Vanessa on April 15, 2014
2. ## physics

A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. Find the temperature increase caused in the 8.00 kg of affected tissue if all the energy heats up the tissue with a specific heat capacity

asked by carolyn on November 7, 2015
3. ## physics

Milk with a mass of 0.021 kg and a tempera- ture of 13C is added to 0.12 kg of coffee at 94C. What is the final temperature? Assume the specific heat capacities of the two liquids are the same as water, and disregard any energy transfer to the liquids’

asked by Heather on February 11, 2014
4. ## physics

A heart defibrillator passes 10.0 A through a patient’s torso for 5.00 ms in an attempt to restore normal beating. Find the temperature increase caused in the 8.00 kg of affected tissue if all the energy heats up the tissue with a specific heat capacity

asked by carolyn on November 8, 2015
5. ## Org. Chem SOS???

Sorry for re-posting this question but I feel as if it hasn't been read or something. Otherwise does no one really know the answer? I am really going crazy over it and I have only 1 try left. Please What is the lowest energy alternative resonance structure

asked by Natasha on January 19, 2010
6. ## physics

A 410-m-wide river has a uniform flow speed of 2.0 m/s through a jungle and toward the east. An explorer wishes to leave a small clearing on the south bank and cross the river in a powerboat that moves at a constant speed of 7.9 m/s with respect to the

asked by Hannah on September 24, 2012
7. ## Physics

A billiard ball with mass 0.210 kg has a speed of 5.2 m/s and collides completely inelastically with another ball of the same size and mass. I understood the first part of the problem I just need help solving the second part. Another billiard ball

asked by Leslie on November 14, 2013
8. ## science

A bird sits on a pole and watches waves. The wave crests are 1.0 meter apart. If one wave crest passes the pole each second, what is the speed of the wave? . What is the period of the wave? . What is the frequency of the wave? . If the waves change so that

asked by mary on February 6, 2011

Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. The inclined plane is inclined at an angle of 37 degrees. The hanging block has

asked by Jared on November 20, 2013
10. ## physics

Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. The inclined plane is inclined at an angle of 37 degrees. The hanging block has

asked by Haff on November 19, 2013
11. ## Physics 6A

A jet pilot takes his aircraft in a vertical loop. If the jet is moving at a speed of 1100 at the lowest point of the loop: A)Determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5 's

asked by Daisy on May 9, 2012
12. ## physics

A 71.0 kg patient is suspended in a raised hospital bed as shown in the figure. The wire is attached to a brace on the patient's neck and pulls parallel to the bed, and the coefficients of kinetic and static friction between the patient and the bed are

asked by andrew on February 9, 2016
13. ## Physics 1

A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2π rad/s. After the disk rotates through 17π radians, the angular speed is 18π rad/s. (a) What is the magnitude of the angular acceleration? answer in rad/s2 (b)

asked by Nat on October 2, 2014
14. ## physics graphing help please

(a) Write the equation for a transverse sinusoidal wave with a maximum amplitude of 2.5 cm and an angular frequency of 2.9 rad/s that is moving along the positive x-direction with a wave speed that is 5.00 times as fast as the maximum speed of a point on

asked by Trace on February 9, 2011
15. ## LA

For questions 7–11, each sentence is missing one type of punctuation. Choose the letter of the punctuation that correctly completes each sentence. 7. The pet stores shelves were filled with items I wanted for my pets. (1 point) apostrophe semicolon colon

asked by Anonymous on April 1, 2013
16. ## physics

an ice skater applies a horizontal force to a 20 kg block on frictionless, level ice causing the block to accelerate uniformly at 1.4 m/s^2 to the right. after the skater stops pushing the block it slides onto a region of ice that is covered with a thin

asked by Maria on November 21, 2014
17. ## English

Are these sentences grammatically correct? Are these sentences grammatically correct? The dog had to choose jumping over the fence or to dig a hole underneath it. She disliked hiking in the woods, picnicking, and going to the beach. As I look down the city

asked by jennifer on October 31, 2015
18. ## WORD PROBLEM

GOING SKIING. LEON DROVE 270 MILES TO THE LODGE IN THE SAME TIME AS PAT DROVE 330 MILES TO THE LODGE. IF PAT DROVE 10 MILES PER HOUR FASTER THAN LEON, THEN HOW FAST DID EACH OF THEM DRIVE? I REALLY NEED HELP ON THIS ONE. PLEASE! IF YOU CAN SHOW THE WORK

asked by leleirvin on August 12, 2005
19. ## Physics

A roller-coaster car speeds down a hill past point A and then rolls up a hill past point B. The car has a speed of 16.1 m/s at point A. The acceleration of gravity is 9.81 m/s^2. Radius of Circle A is 9.98 m. Radius of Circle B is 15.5 m. a) If at point A

asked by Jaylee on November 13, 2010
20. ## Language arts

Selection 1: There's good news and bad news about grizzly bears in the American West. The good news? Their numbers have been increasing in recent years. In 1975, grizzlies made the threatened-species list under the federal Endangered Species Act. The bad

asked by Origami Killer on March 27, 2019
21. ## Physics

At one instant a bicyclist is 50 m due east of a park's flagpole, going due south with a speed of 18 m/s. Then, 13 s later, the cyclist is 45 m due north of the flagpole, going due east with a speed of 13 m/s. For the cyclist in this 13 s interval what is

asked by Tammie on September 11, 2012
22. ## physics

A flight attendant pulls her 66 N flight bag a distance of 318 m along a level airport floor at a constant velocity. The force she exerts is 43 N at an angle of 52° above the horizontal. (a) Find the work she does on the flight bag. (b) Find the work done

asked by Brianna Smith on January 26, 2013
23. ## physics

a 10-g fridge magnet is holding a 2.0 piece of paper on the stainless steel fridge door. A normal force of 0.19 N( the horizontal force of the fridge pushing against the attractive, horizontal, magnet accelerated down the fridge with a net acceleration of

asked by kinsey on October 20, 2016
24. ## Physics

A roll of toilet paper (a partially hollow cylinder with R_2 = 7.5cm, M = 300g, and I = 9.0 x 10^-4 kg m^2) is mounted on a mass-less axle along its central axis. Te roll is initially at rest. Then, at t=0, a child grabs the end of the roll and starts

asked by Bevi on November 22, 2014
25. ## Physics

A roll of toilet paper (a partially hollow cylinder with R_2 = 7.5cm, M = 300g, and I = 9.0 x 10^-4 kg m^2) is mounted on a mass-less axle along its central axis. Te roll is initially at rest. Then, at t=0, a child grabs the end of the roll and starts

asked by Bev on November 23, 2014
26. ## Physics- Newton's Laws in Space

Hi! I would really appreciate it if you could help me think through these questions discussing Newton's Laws in Space... Directions: Consider the following scenarios ignoring the effects of gravity: 1. You are the capitan of a spacecraft traveling in the

asked by Sophie on December 2, 2006
27. ## Physics

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

asked by Kayla on September 11, 2012
28. ## physics

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the

asked by Dante on August 29, 2012
29. ## Physics

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

asked by Kayla on September 11, 2012
30. ## pyhsics

A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the

asked by ali on September 8, 2012
31. ## Physics

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

asked by Kayla on September 11, 2012
32. ## Physics

A cannonball is shot (from ground level) with an initial horizontal velocity of 38.0 m/s and an initial vertical velocity of 26.0 m/s. The initial speed of the cannonball 46.04 m/s The initial angle θ of the cannonball with respect to the ground 34.38°

asked by Kayla on September 11, 2012
33. ## Physics

A mass m = 85 kg slides on a frictionless track that has a drop, followed by a loop-the-loop with radius R = 19.2 m and finally a flat straight section at the same height as the center of the loop (19.2 m off the ground). Since the mass would not make it

asked by Michelle on October 31, 2015
34. ## Anatomy and Physiology II

1. Which answer below includes all the phases of respirations? A. Breathing, pulmonary ventilation, gas transport, and cellular respiration B. Pulmonary ventilation, external respiration, internal respiration, and gas transport C. Inhalation, external

asked by Sabrina on March 3, 2013
35. ## physic

A 1.0-kg steel ball and a 2.0-m cord of negligible mass makeup a simple pendulum that can pivot without friction about thepoint O, as in the picture below. This pendulum isreleased from rest in a horizontal position, and when the ball isat its lowest point

asked by Anonymous on February 27, 2011
36. ## Physics

A loaded penguin sled weighing 73 N rests on a plane inclined at angle θ = 21° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.24, and the coefficient of kinetic friction is 0.19. (a) What is the

asked by Granger on October 1, 2011
37. ## Physics

A loaded penguin sled weighing 81 N rests on a plane inclined at angle θ = 21° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.24, and the coefficient of kinetic friction is 0.13. (a) What is the

asked by Alaina on October 10, 2010
38. ## Physics

A loaded penguin sled weighing 66 N rests on a plane inclined at angle θ = 24° to the horizontal (Fig. 6-23). Between the sled and the plane, the coefficient of static friction is 0.22, and the coefficient of kinetic friction is 0.13. (a) What is the

asked by Ted on October 23, 2011
39. ## physics

A loaded penguin sled weighing 75 N rests on a plane inclined at angle θ = 24° to the horizontal (Fig. 6-28). Between the sled and the plane, the coefficient of static friction is 0.25, and the coefficient of kinetic friction is 0.13. (a) What is the

asked by Taylor on October 23, 2011
40. ## physics

A person pulls with a force of 40 N on two boxes at rest. The top box is 3.0 kg and the bottom box is 6.0 kg. The coefficient of kinetic friction between the floor and the larger box is .20 and the angle is 30 degrees. a) if the smaller box doesn't slide

asked by caroline on October 27, 2010
41. ## physics

A person pulls with a force of 40 N on two boxes at rest. The top box is 3.0 kg and the bottom box is 6.0 kg. The coefficient of kinetic friction between the floor and the larger box is .20 and the angle is 30 degrees. a) if the smaller box doesn't slide

asked by caroline on October 28, 2010
42. ## Physics

Does a ball that is rolled on a floor speed up before slowing down?

asked by Anonymous on September 17, 2017
43. ## physics (Science)

If a bee flew 27 centimeters in 10 seconds what would its speed be?

asked by Sara on March 28, 2011
44. ## math

if you jog 72 miles in 3.5 hours what is your average speed?

asked by tedeja on October 19, 2010
45. ## chemistry

What is the difference between the speed of a moving object and its velocity?

asked by jamie on April 10, 2014
46. ## Physics

A car with a mass of 1500kg is moving at a speed of 50 km/h. What is it's Ek?

asked by Mileena on April 3, 2017
47. ## Math(reiny)

On the earlier questin would the speed be faster not slower?

asked by Scott on July 11, 2013

Should you bribe a customs official to speed up delivery?

asked by joy on February 16, 2011
49. ## physical science

why the speed of sound is faster in solids than in gases.

asked by sidney on October 21, 2015
50. ## physics

The equation for distance is d = st. How far does a car go in 10 seconds at a speed of 44 m/s?

asked by manuel on May 30, 2014
51. ## Physical Science

What is the wavelength of an earthquake wave if it has a speed of 8 km/s and a frequency of 8 Hz?

asked by Francisco on February 6, 2018
52. ## science

what is the KE of a 0.2kg rolling ball travelling at a speed of 5m/s

asked by dianne on July 7, 2015
53. ## physics

What is its speed after 1.87 s if it accelerates uniformly at −4.31 m/s^2? Answer in units of m/s

asked by selena on September 3, 2012
54. ## Physics

find the height from which you would have to drop a ball so that it would have a speed of 9.0 m/s

asked by Cynthia on March 3, 2011
55. ## physical Science

What was the average speed in km/h of a car that travels 400km in 4-5h?

asked by Joslyn on February 9, 2012
56. ## science

what units would you use to measure the speed of a car on the highway?

asked by kahy on August 27, 2010
57. ## Physics

What is the speed of an object in circular motion called?

asked by James on May 24, 2010
58. ## Earth Science

Why is the speed of Earth's rotation different at the equator than it is at the poles?

asked by Jackie on October 7, 2009
59. ## Physics

If you run 100 m at 5 m/s and 300 m at 1 m/s, what is your average speed?

asked by anonymous on June 21, 2012
60. ## Science (Physics)

1. Which of the following is the fastest speed? Show your working. (a) 60 km/h (b) 15 m/s (c) 1.1 km/min

asked by Jaizzer on August 16, 2012
61. ## science

which of the following does not change when a car keeps a constant speed but changes direction

asked by Grace on April 28, 2016
62. ## math

a motorist goes 78km in 40minutes calculate it speed

asked by Anonymous on July 4, 2011
63. ## Physics

How far does a runner travel if they maintain a speed of 8.5 m/s for 240 s?

asked by Student on September 8, 2016
64. ## Science

Hurry!!!!!!!!!!!!!!!!!!!!!!!!!!!! Which of the following is a speed, not a velocity? A. 35 m/s east B. –35 m/s C. 35 m/s D. 35 m/s south

asked by Layla on December 4, 2012
65. ## Chemistry

What is the wavelength of an electron traveling at 7.59% of the speed of light?

asked by Brian on March 14, 2013

A man walks for 5 km/hr for 1 km and 7 km/hr for next 1 km. What is his average speed for the walk of 2 km? -5.8 km/hr -6.0 km/hr -2.0 km/hr -1.0 km/hr Thank you very much!!

asked by Ellie on August 20, 2015
67. ## science

how does increasing the speed of an object change it's momentum?

asked by jessica on March 24, 2009
68. ## science

a car and a truck are traveling at the same speed. Which has more momentum? why?

asked by lola on March 24, 2009
69. ## Physics

A satellite is orbiting the earth at a distance of 1.00 x 10^3 km. What is its speed?

asked by Andrew on November 28, 2012
70. ## Physics

Can you think of any ways to measure instantaneous speed directly?

asked by Natasha on January 29, 2012
71. ## survey of sciences

1. Explain what happens to the G-force as the speed of the centrifuge increases.

asked by shaquilla on December 23, 2012
72. ## Math

A car covers 2924 km in 43 hrs. What is it's speed

asked by Monique on September 12, 2011
73. ## science

how do i calculate the average speed and velocity on a graph??

asked by valeria on January 23, 2013
74. ## physics

what is the frequency of wavelength 5.5cm travelling at 2 a speed of 1.6 m\s?

75. ## physics

what is the speed in unit if a body travels at 108 km/hr

asked by Anonymous on September 14, 2011
76. ## Chem

What is the speed of an argon atom that has a de Broglie wavelength of 5.2 pm?

asked by Chris on July 3, 2011
77. ## physics

the formula of centripital accelaration is v>2/r Q:Why here is square of speed ?

asked by Bilal on November 7, 2014
78. ## quantum physics

To what speed must an electron be accelerated for it to have a wavelenght of 3.0cm?

asked by john on February 19, 2010

What effect does the magnetic field have on the speed of the particle?

asked by jewel on October 23, 2012
80. ## science

how can two observers measure a different speed for the same moving object

asked by dina on March 28, 2010
81. ## Physic

An airplane flew 1000km in 4h. What was the airplanes speed?

asked by Brionna on February 5, 2012
82. ## phy science

A wave has a speed of 230 m/s and a frequency of 25 Hz. What is its wavelength?

asked by biq juciy on November 16, 2012
83. ## Physics

Whats the speed of an electron of Bohr's orbit K

asked by Dyana on January 23, 2013
84. ## Physics

Calculate the speed of light in ethyl alcohol (n=1.52).

asked by Enalah on October 7, 2018
85. ## science

What will happen if you choose surface speed too low?

asked by PHATQ on September 9, 2015
86. ## Maths

Amy walks 9km in 1.5hours.what is her speed?

asked by Amy on October 13, 2016
87. ## maths

What time will a runner take to run a distance of 8 km at a speed of 15 km/hr?

asked by kumar on March 20, 2018
88. ## Physics

Derive an expression for escape speed of satellite.

asked by Abidur on April 9, 2017
89. ## Science-Motion

How could an object accelerate while still traveling at a constant speed

asked by mickey on March 23, 2011
90. ## Physics

a water wave has frequency 0.40 Hz and wavelength 2.0m. Its speed is

asked by Amber on January 10, 2012
91. ## DrBob222

If a wave has a period of .02 seconds and a speed of 4 m/s, what is its wavelength? .08 m

asked by Jon on April 5, 2008
92. ## math

What should be the result when the speed 45m/sec converted into km/hr

asked by Anonymous on November 11, 2016
93. ## PHYSICS

A CAR COVERED A DISTANCE OF 10m IN 5 s; ITS SPEED WILL BE?

asked by RUNALDO on March 10, 2016
94. ## physics

how do i find the amount of work done when given mass and speed?

asked by Anonymous on February 24, 2011
95. ## Honors Physical Science

How do I find the speed of a truck that travels 14.5 km in 9.25 minutes in km/hr?

96. ## Physics

a water wave has frequency 0.40 Hz and wavelength 2.0m. Its speed is

asked by Amber on January 10, 2012
97. ## Science

Calculate the speed of each runner from the graph in figure 3.14

asked by Destiny Kelley on December 9, 2015
98. ## physics

what is the speed of a car in km/n if it travels 108 km. in 1 min.?

asked by junna rose on June 28, 2011
99. ## math

a car traveled 220km in 2 hours.what is the speed in km/h

asked by salome thwala on August 28, 2013
100. ## Physics

a water wave has frequency 0.40 Hz and wavelength 2.0m. Its speed is

asked by Amber on January 10, 2012