A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 1,254.4 meters B. 78.4 meters C. 39.2 meters D. 313.6
meters
y(8) = -1/2 (9.81 * 8 ) = 313.92 m so is D. 313.6 meters
Original conversation
User: A stone falls from a ledge and takes 8 seconds to hit the ground. The stone has an original velocity of 0 m/s. How tall is the ledge? A. 1,254.4 meters B. 78.4 meters C. 39.2 meters D. 313.6 meters

Weegy: y(8) = -1/2 (9.81 * 8 ) = 313.92 m so is D. 313.6 meters
Controler|Points 3928|

User: The ability of a material to transfer heat or electric current is called A. insulation. B. convection. C. porosity. D. conductivity.

Weegy: D. conductivity is the ability of a material to transfer heat or electric current.

User: The acceleration of gravity is a constant equal to _______ meters per second squared. A. 7.6 B. 8.4 C. 10.2 D. 9.8

Weegy: 9.8 meters per second squared
Glendepker|Points 10|

User: If a small-diameter open glass tube is partially immersed in a vessel containing mercury, the surface of the mercury inside the tube will be A. higher than the mercury in the vessel, and shaped like the inside of a bowl. B. higher than the mercury in the vessel, and shaped like the outside of an umbrella. C. lower than the mercury in the vessel, and shaped like the outside of an umbrella. D. lower than the mercury in the vessel, and shaped like the inside of a bowl.

Weegy: *D. higher than the mercury in the vessel, and shaped like the inside of a bowl.
piash|Points 3380|

User: The main difference between speed and velocity involves A. weight. B. gravity. C. distance. D. direction.

Weegy: The main difference between speed and velocity involves D. direction.

Question
Rating

Questions asked by the same visitor
The orbits of planets being elliptical was one the planetary laws developed by A. Ptolemy. B. Brahe. C. Copernicus. D. Kepler.
Weegy: The orbits of planets being elliptical was one the planetary laws developed by Kepler. User: In a practical machine, the power output is _______ the power input. A. smaller than B. larger than C. multiplied by D. equal to Weegy: In a practical machine, the power output is smaller than the power input. Source: User: According to Ptolemy's model of the movement of celestial bodies, A. the sun is the center of the universe. B. planets orbit in circular paths around the earth. C. the earth rotates around the sun. D. the earth rotates around the moon. Weegy: According to Ptolemy's model of the movement of celestial bodies,: C. planets orbit in circular paths around the earth. User: An object has a mass of 120 kg on the moon. What is the force of gravity acting on the object on the moon? A. 196 N B. 1,176 N C. 20 N D. 12.24 N Weegy: C. 196 N User: Oil flows upward in the wick of a lantern because of the liquid property called A. density. B. viscosity. C. meniscusity. D. capillarity. Weegy: Oil flows upward in the wick of a lantern because of the liquid property called A. [ viscosity. 'When fluid is forced through a tube, the fluid generally moves faster near the axis and very slowly near the walls, therefore some stress is needed to overcome the friction between layers and keep the fluid moving. For the same velocity pattern, the stress required is proportional to the fluid's viscosity.' ] User: An object with a mass of 78 kilograms is lifted through a height of 6 meters. How much work is done? A. 47.75 J B. 764.4 J C. 4,586.4 J D. 468 J Weegy: D. [ 4,586.4 J use the formula W = mgs W stands for work done in joules m stands for mass of the object g stands for gravity s stands for the distance the object is lifted W = mgs W = 78kilograms 9.8m/s2 6meters W = 4586.4 J (joules) answer would be 4,586.4 J ] User: A tank with a flat bottom is filled with water to a height of 4 meters. What is the ... (More)
Question
The ratio of output power to input power, in percent, is called A. efficiency. B. work. C. conductivity. D. horsepower.
Weegy: The ratio of output power to input power, in percent, is called: B. EFFICIENCY. User: A naturally occurring force related to two bodies in motion is _______ force. A. centrifugal B. gravitational C. frictional D. centripetal Weegy: A naturally occurring force related to two bodies in motion is __ A. gravitational _____ force. User: If the velocity of an object changes from 65 m/s to 98 m/s during a time interval of 12 s, what is the acceleration of the object? A. 2.75 m/s B. 13.58 m/s C. 33 m/s D. 5.42 m/s Weegy: C. 2.75 is the acceleration of the object. SOLUTION: (98 m/s - 65 m/s) / 12s = 33 m/s / 12s = 2.75 m/s^2 User: In which of the following units is acceleration expressed? A. Foot-pounds B. Meters per second squared C. Kilograms D. Newtons Weegy: Acceleration is expressed in: A. meters per second squared. User: What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? A. 6,000 J B. 5,880 J C. 2,940 J D. 12,000 J Weegy: Answer : C. The kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s is 6,000 J. k.e.=1/2 mv^2 =1/2*30*(20)^2 =15*400 =6000 kg m^2/s^2 =6000J User: A center-seeking force related to acceleration is _______ force. A. centripetal B. frictional C. gravitational D. centrifugal Weegy: A center-seeking force related to acceleration is centripetal force. Source: hyperphysics.phy-astr.gsu.edu/hbase/cf.html User: A car with a mass of 1,200 kilograms is moving around a circular curve at a uniform velocity of 20 meters per second. The centripetal force on the car is 6,000 newtons. What is the radius of the curve? A. 160 meters B. 16 meters C. 80 meters D. 32 meters Weegy: The answer is D. 80 meters User: The metric unit of force is the A. kilogram. B. gram. C. newton. D. nanometer. Weegy: The metric unit of force is the newton. User: How much time should be allowed ... (More)
Question
Popular Conversations
Simplify the expression where possible. (x 2y 3z 4) 2
Weegy: (2 x^3 y^4 z)/3 User: Simplify the expression where possible. (-5x 2) 3 Weegy: 20x-16 User: Simplify the ...
If g(x)=2x + 1, find g(a + h)- g(a). 2h 2h + 2 h + 1
Weegy: 8x^2 - 2x = 1; 8x^2 - 2x - 1= 0; (4x + 1)(2x - 1) = 0 (4x + 1) = 0; 4x = -1, x = -1/4 or (2x - 1) = 0; 2x = 1; ...
In what year did the United States enter World War ...
Weegy: The United Stats entered the World War I in 1917. User: Why was the Espionage Act, the Trading with the ...
38th president of the united states
Weegy: hello, 38th president of which country/ User: 39th president Weegy: Jimmy Carter was the 39th US president. ...
The international peacekeeping organization formed directly after ...
Weegy: The international peacekeeping organization formed directly after World War II was called the the United ...
The Triple Entente consisted of _____. France, Germany, and ...
Weegy: Thomas Woodrow Wilson (December 28, 1856 ? February 3, 1924) was the 28th President of the United States, from ...
How far does a bus travel in 4 hours at 55 mph? User: Peggy had ...
Weegy: Please post the options. Thanks! (She has 6 quarters and 2 nickels) User: Simplify 1 · x - . User: Solve for ...
simplify the expression below 12
Weegy: May i know what the question is? User: square of 12 User: square root of 12
Weegy Stuff
S
Points 709 [Total 709] Ratings 10 Comments 589 Invitations 2 Offline
S
Points 696 [Total 696] Ratings 13 Comments 566 Invitations 0 Offline
S
Points 639 [Total 639] Ratings 0 Comments 639 Invitations 0 Offline
S
1
L
L
P
R
P
L
P
P
R
Points 295 [Total 12547] Ratings 2 Comments 275 Invitations 0 Offline
S
L
P
P
P
Points 166 [Total 3543] Ratings 0 Comments 166 Invitations 0 Offline
S
Points 38 [Total 107] Ratings 0 Comments 38 Invitations 0 Offline
S
Points 12 [Total 12] Ratings 1 Comments 2 Invitations 0 Offline
S
Points 10 [Total 10] Ratings 1 Comments 0 Invitations 0 Offline
S
L
Points 7 [Total 4099] Ratings 0 Comments 7 Invitations 0 Offline
S
Points 6 [Total 6] Ratings 0 Comments 6 Invitations 0 Offline
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.