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December 19, 2014

Homework Help: Science: Physics

Recent Homework Questions About Physics

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physics
Find the total displacement of a body in 8seconds starting from rest with an acceleration of 2cm/sec2
Wednesday, July 2, 2014 at 12:05pm

Physics
In 1910 Rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil. He unexpectedly observed a few of the particles scattered almost directly backward. This result was not consistent with then current models of atomic ...
Wednesday, July 2, 2014 at 11:45am

Physics- check answer please
I am supposed to fill in the blanks without a word bank. 1. I you push a crate with 40 N of force at an angle of 30 degrees and your friend pushes with a force of 40 N horizontally, the amount of work you are doing is _____ the amount of work your friend is doing on the crate ...
Wednesday, July 2, 2014 at 11:39am

Physics
1. How is average speed related to instantaneous speed? What certain conditions must be met for the two variables to have the same or close value? 2. Cite one practical example on the use of the concepts of instantaneous speed, average speed in observing safety on the road.
Wednesday, July 2, 2014 at 5:33am

Physics
An astronaut of mass m in a spacecraft experiences a gravitational force F=mg when stationary on the launchpad. What is the gravitational force on the astronaut when the spacecraft is launched vertically upwards with an acceleration of 0.2g? A 1.2mg B mg C 0.8mg D 0 Ans= B ...
Tuesday, July 1, 2014 at 11:20pm

PHYSICS
Two lifeguards pull on ropes attached to a raft. If they pull in the same direction, the raft experiences a net external force of 332 N to the right. If they pull in opposite directions, the raft experiences a net external force of 122 N to the left. Draw a free body ...
Tuesday, July 1, 2014 at 9:50pm

physics 1
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.13 s, and the velocity of the car decreases to +4.90 m/s. The car's deceleration has a magnitude of 3.55 m/s2 during this time. What is the car's displacement?
Tuesday, July 1, 2014 at 9:45pm

physics
A particle (m=3*10^-6 g, q=5*10^-6 C) moves in a uniform magnetic field given by (60j) mT. At t=0 the velocity of the particle is equal to (30j - 40k)m/s. The subsequent path of the particle is? I know that the answer is: helical with a 40-cm radius. But i dont know the ...
Tuesday, July 1, 2014 at 3:29pm

Physics
Which of the following is an inertial frame of reference? a) a child on a moving swing observes the child next to them moving in sync b) a child on a moving swing observes a ball that they throw to their parents standing on the ground c) a child observes the motion of the ...
Tuesday, July 1, 2014 at 2:56pm

college physics
A block of mass 21.5 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 3.79 m/s2. what is the tension in the cable? what is the magnitude of the net force acting on the mass? what is the speed of the...
Tuesday, July 1, 2014 at 12:28pm

physics
1. what happens to the force required for an object to maintain circular motion if the period is halved (goes twice as fast around the circle)? a) force doubles b) force quadruples c) force is halved d) force is quartered 2. In a pulley problem involving an inclined plane: a) ...
Tuesday, July 1, 2014 at 12:17pm

physics
A car moves with a speed of 30km/hr for half an hr,25km/hr for 1he and 40km/hr for 2hrs. What is the average speed of car?
Tuesday, July 1, 2014 at 5:30am

physics
what force parallel to an inclined plane of height 3 meter and base 4 meter can just support a block mass 500 gram on the plane ? the coefficient of friction 0.25
Tuesday, July 1, 2014 at 2:33am

Physics
You take a 10 N block and lift it 1 meter vertically from the floor and then place it back down on the floor. How much work do you do during this motion? W = F x d x cos(theta) So lifting it does work and the lowering it does negative work won't that cancel out to get OJ ...
Tuesday, July 1, 2014 at 2:13am

PHYSICS
HOW CAN YOU TELL WETHER 2 CHARGES HAVE THE SAME MAGNITUDE
Tuesday, July 1, 2014 at 1:11am

Physics
The velocity acquired by a body moving with uniform acceleration is 12m/s in 2 seconds and 18m/s in 4 seconds.Find the initial velocity of the body.
Tuesday, July 1, 2014 at 12:02am

college physics
A block of mass 21.5 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 3.79 m/s2. what is the tension in the cable? what is the magnitude of the net force acting on the mass? what is the speed of the...
Monday, June 30, 2014 at 11:43pm

Physics
A 20 kg box approaches the foot of a 30 degree inclined plane with a speed of 10 m/s. the coefficient of friction between the box and the inclined plane is 0.2. (a) How far up the inclined plane will the box go? (b) If the box slides back down the inclined plane, what is its ...
Monday, June 30, 2014 at 9:27pm

physics
A girl inside a room is looking at the window and sees a volleyball passing outside the window of width w and height d. The ball appears from the upper left corner A of the window and disappears at the lower right corner B in t0 second. The girl knows that the ball has been ...
Monday, June 30, 2014 at 8:11pm

Physics
Four point charges are at the corners of a square of side a as shown in the figure below. Determine the magnitude and direction of the resultant electric force on q, with ke, q, and a left in symbolic form. (Let B = 2.5q and C = 8q. Let the +x-axis be pointing to the right.) ...
Monday, June 30, 2014 at 3:00pm

physics
a bullet travelling horizontally at a speed of 350 m/s hits a board perpendicular to the surface, passes through it and emerges on the other side at a speed of 210 m/s . if the board is 4.00 cm thick, how long does the bullet takes to pass through it ?
Monday, June 30, 2014 at 10:36am

physics
pilots can survive radial acceleration up to 9g(88m/s^2). can a fighter pilot flying at a constant speed of 500m/s and in a circle that has a diameter of 8800 m survive to tell about his experience?
Monday, June 30, 2014 at 8:37am

physics, science
What effect does friction have upon a) ball bounce angle, and b) ‘speed’ of the court? Refer to clay and grass courts to help illustrate your answer. (4 marks) please help!
Monday, June 30, 2014 at 6:52am

physics
A car traveling at2.24m/s skids and stops in 2.55s determine the skidding distance of car
Monday, June 30, 2014 at 2:28am

physics
A missile is fired from a launcher with an initial velocity of 250 m/s at a target located 500 m above the launcher and at a horizontal distance of 3000 m. Determine the following: i) The possible firing angles required to hit the target. ii) The maximum height reached for all...
Sunday, June 29, 2014 at 8:43pm

Physics
(a) Calculate the linear acceleration of a car, the 0.280 m radius tires of which have an angular acceleration of 15.0 rad/s2. Assume no slippage. (m/s2) (b) How many revolutions do the tires make in 2.50 s if they start from rest? (rev) (c) What is their final angular ...
Sunday, June 29, 2014 at 8:06pm

Physics
You and a friend are playing a game of squirt-gun tag in a maze. Suddenly you see your friend's image in a small planar mirror (see illustration). You take a shot over the barrier in front of you and find that your friend is just at the end of the 7.0 m range of your ...
Sunday, June 29, 2014 at 5:05pm

Physics
A large store escalator that is designed to transfer customers to one floor to another, a vertical distance of 8.0m. It takes each person 20 seconds to ride from bottom to top of the escalator. Explain how you would determine the power of the escalator motor.
Sunday, June 29, 2014 at 1:06am

physics
The velocity of a ball changes from ‹ 8, −5, 0 › m/s to ‹ 7.88, −5.28, 0 › m/s in 0.04 s, due to the gravitational attraction of the Earth and to air resistance. The mass of the ball is 140 grams. I calculated the acceleration and got <-3,-7,...
Saturday, June 28, 2014 at 6:14pm

physics
1. the applied force on a stationary object is less than the maximum force of static friction. Which of the statements are false a) the object will move backwards b) the actual force of static friction will be equal to the applied force c) the object will remain stationary ...
Saturday, June 28, 2014 at 5:20pm

physics
A 6 kg box with initial speed 5 m/s slides across the floor and comes to a stop after 1.4 s. a.What is the magnitude of the average net force on the box? b.You put a 3 kg block in the box, so the total mass is now 9 kg, and you launch this heavier box with an initial speed of ...
Saturday, June 28, 2014 at 5:12pm

Physics
In projectile motion, how would you find the final velocity of the object just before it hits the ground a) find the second vertical velocity b) add the final and horizontal velocities directly c)add the final and horizontal velocities as vectors d) add the final and ...
Saturday, June 28, 2014 at 4:24pm

physics
A referee tosses a coin straight up with a velocity of 5.25 m/s, how high does it go above its point of release? (Hint: How fast is it moving at the maximum height?)
Saturday, June 28, 2014 at 3:34pm

Physics
Is there normal contact force on a frictionless surface?
Saturday, June 28, 2014 at 12:32pm

physics
a stone is thrown straight up from a 50m high building and hits the ground at a speed of 37.1m/s. What is the initial velocity and what is the maximum height above the ground that the stone reaches?
Saturday, June 28, 2014 at 11:27am

physics
a car is driven off the edge of that is 54.0 m high. the point of impact is 130m from the base of the cliff. how fast was the car traveling in (miles/hr) when it went over the cliff?
Saturday, June 28, 2014 at 9:41am

physics
with an initial speed of 260km/h a train takes 1.50 x 10^3 m to stop on a level track. assuming the 'deceleration' is constant. what is the time in seconds taken for stopping?
Saturday, June 28, 2014 at 9:38am

physics
what was the initial velocity of a race car traveling down a long straight track if it accelerates at 5.79m/s^2 and ends up going 163km/h in a time of 3.60 seconds?
Saturday, June 28, 2014 at 9:35am

Physics
What happens when we bring a mercury barometer to the moon?
Saturday, June 28, 2014 at 9:26am

Physics
A person with a mass of 55kg climbs a tower with a height of 11m in 25 minutes. What power is produced?
Friday, June 27, 2014 at 11:53pm

Physics
A car is traveling at 11.0 m/s, and the driver sees a traffic light turn red. After .59 s (the reaction time), the driver applies the brakes, and the car decelerates at 8 m/s^2. What is the stopping distance of the car, as measured from the point where the driver first sees ...
Friday, June 27, 2014 at 10:56pm

physics
An object with a mass of 50.0 g displaces 230.0 ml of water when it is completely immersed. What is the buoyant force on the mass? (Use g = 9.8 N/kg as necessary.)
Friday, June 27, 2014 at 10:12pm

Physics
A 2.73 kg particle has a velocity of vx = 6.02 m/s and vy = 0.316 m/s. Find the magnitude of its total momentum. Answer in units of kg · m/s
Friday, June 27, 2014 at 5:06pm

Physics
A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially. She measures the heights reached by drops moving vertically. A drop that breaks loose from the tire on one turn rises ...
Friday, June 27, 2014 at 2:20pm

physics
Given: vector a+b+c= 0. Out of the three vectors a,b and c two are equal in magnitude. The magnitude of the third vector is √2 times that of either of the two having equal magnitude. The angles between the vectors are:
Friday, June 27, 2014 at 1:59pm

physics
A car is moving on a straight road due north with a uniform speed of 50km h^-1 when it turns left through 90°. It the speed remains unchanged after turning, the change in the velocity of the car in the turning process is :
Friday, June 27, 2014 at 1:54pm

physics
A soccer ball travelling at 15 m/s [E] bounces off of a goal post and ends up moving 12 m/s [S 30¡Æ E]. If the ball was in contact with the post for 0.10 seconds, calculate the acceleration of the ball.
Friday, June 27, 2014 at 1:44pm

physics
a man stands on the roof of a 15.0m tall building and throws a rock with a velocity of magnitude 30.0m/s at an angle of 33 degrees above the horizontal. ignoring resistance calculate the horizontal distance from the base of the building to the point where the rock strikes the ...
Friday, June 27, 2014 at 12:47pm

physics
a long jumper takes off at an angle of 20 degrees with the horizontal and reaches a maximum height of 0.55 meters at mid- flight. how far did she jump?
Friday, June 27, 2014 at 12:44pm

Physics
What happens to potential energy during melting
Friday, June 27, 2014 at 12:28pm

Physics help
how might life be different if static friction did not exist? give three examples and reference formulas to support your answers I have three examples but I do not understand what the questions mean by reference formulas
Friday, June 27, 2014 at 12:06pm

Physics multiple choice
1. What happens to the force required for an object to maintain circular motion if the period is halved (goes around twice as fast around the circle)? a) force doubles b) force quadruples c) force is halved d) force is quartered my answer: c 2. Which is true a) the ...
Friday, June 27, 2014 at 12:05pm

Physics
1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball lands 24 m away, determine the height of the cliff. 2. if the mass A is 1 kg and the mass of B is 6.0 kg, determine the acceleration of the system and ...
Friday, June 27, 2014 at 12:05pm

physics
A 75.00-g sample of an unknown metal is heated to 52.00°C. It is then placed in a coffee cup calorimeter filled with water. The calorimeter and the water inside have a combined mass of 225.0 g and an overall specific heat of 2.045 J/(gi°C). The initial temperature of ...
Friday, June 27, 2014 at 11:37am

physics
A block of mass 2.5 kg is pushed up against the vertical wall by a force of 60 N acting at 47◦ to the ceiling. The coefficient of kinetic friction between the block and the wall is 0.67. The acceleration of gravity is 9.8 m/s2 . Find the work done by this force in moving...
Friday, June 27, 2014 at 10:58am

Physics
A motorcycle is travelling at a constant acceleration in a straight line. When it passes by the first lamp post, it is travelling at 10ms-1. When is passes by the next lamp post which is 200m from the first lamp post, the motor cycle is travelling at 16 ms-1. What is the ...
Friday, June 27, 2014 at 7:14am

Physics . pls help me :)
Two train cars are on a straight, horizontal track. One car starts at rest and is put in motion with a constant acceleration of 2m/s^2. This car moves towards a second car that is 30 away. The second car is moving away from the first car and is traveling at a constant speed of...
Friday, June 27, 2014 at 6:10am

physics
140
Friday, June 27, 2014 at 5:59am

physics
A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel, of radius 0.363 m, and observes that drops of water fly off tangentially. She measures the height reached by drops moving vertically (Fig. P10.63). A drop that breaks loose ...
Friday, June 27, 2014 at 4:45am

Physics (HEELPPP)
A coin with a diameter of 1.90 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular speed of 14.4 rad/s and rolls in a straight line without slipping. If the rotation slows with an angular acceleration of magnitude 1.88 rad/s2, how far ...
Friday, June 27, 2014 at 2:02am

physics
A stone is projected up with a vertical velocity u, reaches upto a maximum height h. When it is at a height of 3h/4 from the ground, the ratio of KE and PE at that point is: (consider PE=0 at the point of projection) a]1:1 b]1:2 c]1:3 d]3:1
Friday, June 27, 2014 at 1:39am

Physics
how might life be different if static friction did not exist? give three examples and reference formulas to support your answers I have three examples but I do not understand what the questions mean by reference formulas
Thursday, June 26, 2014 at 11:32pm

Physics
1. A ball is launched from a cliff with an initial velcity of 10 m/s at an angle of 40 degrees above horizontal. If the ball lands 24 m away, determine the height of the cliff. 2. if the mass A is 1 kg and the mass of B is 6.0 kg, determine the acceleration of the system and ...
Thursday, June 26, 2014 at 10:35pm

Physics
1. What happens to the force required for an object to maintain circular motion if the period is halved (goes around twice as fast around the circle)? a) force doubles b) force quadruples c) force is halved d) force is quartered my answer: c 2. Which is true a) the ...
Thursday, June 26, 2014 at 10:35pm

Physics
What is the total pressure, in atmospheres, of a 10.0 L container that contains 10 moles of nitrogen gas and 10 moles of oxygen gas at 300 K? I tried using PV=nRT and added both P together but kept getting the wrong answer. n=10, T=300 K, V=1x10^-3 m^3
Thursday, June 26, 2014 at 10:34pm

physics
One mole of titanium (6 1023 atoms) has a mass of 48 grams, and its density is 4.54 grams per cubic centimeter, so the center-to-center distance between atoms is 2.60 10-10 m. You have a long thin bar of titanium, 2.4 m long, with a square cross section, 0.11 cm on a side. You...
Thursday, June 26, 2014 at 8:47pm

Physics
Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1500 kg and was approaching at 9.00 m/s due south. The second car has a mass of 700 kg and was approaching at 15.0 m/s due west. (a) Calculate the final velocity of the cars. (b) ...
Thursday, June 26, 2014 at 5:07pm

Physics
A golfer, putting on a green, requires three strokes to "hole the ball." During the first putt, the ball rolls 5.9 m due east. For the second putt, the ball travels 2.4 m at an angle 20° north of east. The third putt is 0.50 m due north. What displacement (...
Thursday, June 26, 2014 at 4:54pm

physics please help!!
find the temperature of the hot reservoir of a carnot engine that has QH=1575j that does work on a 200kg crate, caussing it to go from rest to a velocity of 2.35m/s along the horizontal frictionless surface. Tc=100K
Thursday, June 26, 2014 at 3:23pm

physics
An athlete runs from one end to the other end of a semicircular track whose radius is 70m. What is the total distance covered by the athlete and what is his displacement?
Thursday, June 26, 2014 at 11:54am

science..physics
An athlete runs from one end to the other end of a semicircular track whose radius is 70m.what is the total distance covered by the athlete and what is his displacement?
Thursday, June 26, 2014 at 11:44am

Physics
A hydrogen atom is at the earth's surface. The electron and proton in the atom are separated by a distance of 5.29x10^-11m. What is the ratio of the magnitude of the electrical force exerted by the proton on the electron to the weight of the electron?
Thursday, June 26, 2014 at 10:30am

physics
a body travel a distance of 15 m from a to b and them moves 20 m at right angles to ab. calculate total distance covered and displacement.
Thursday, June 26, 2014 at 6:09am

Physics
Dina walked North and East and has a resultant displacement of 125, 35^0 East of North. She has a velocity of 2.5 m/s. Compute her walking time and average speed.
Thursday, June 26, 2014 at 5:46am

physics
The velocity of a sprinter is 9m / s. After 4 seconds, his velocity become zero. If acceleration is taken to be uniform. Find its value
Thursday, June 26, 2014 at 12:57am

physics
an object moves from point p to q with an average speed of 60m/s and comes back from point q to p with an average speed of 144km/h . what is the average speed of whole journey in m/s?
Wednesday, June 25, 2014 at 11:49pm

physics
A 90 kg box is pushed by a horizontal force F at constant speed up a ramp inclined at 28°, as shown. Determine the magnitude of the applied force. when the ramp is frictionless. when the coefficient of kinetic friction is 0.18.
Wednesday, June 25, 2014 at 11:02pm

physics
A sound wave of frequency 1310 Hz., propagating through air at 0 degrees Celsius, has a pressure amplitude of 11.0 Pa. What is the maximum particle speed (in meters/second)?
Wednesday, June 25, 2014 at 8:45pm

physics
A single constant force 18.1 N acts on a particle of mass 2.92 kg. The particle starts at rest at t=0. What is the instantaneous power delivered by the force at t=4.48s? Answer in units of W
Wednesday, June 25, 2014 at 5:05pm

physics
A rain cloud contains 3.11 × 107 kg of water vapor. The acceleration of gravity is 9.8 m/s2 . How long would it take for a 1.8 kW pump to lift the same amount of water to an altitude of 20000 m? Answer in units of years
Wednesday, June 25, 2014 at 5:02pm

Physics
A student gets his car stuck in a snow drift. Not at a loss, having studied physics, he attaches one end of a stout rope to the vehicle and the other end to the trunk of a nearby tree, allowing for a small amount of slack. The student then exerts a force vector F on the center...
Wednesday, June 25, 2014 at 2:28pm

physics
A bird has a mass of 0.2 kg and is flying 10 m above the ground with a speed of 7 m/s. What is the total mechanical energy of the bird? Acceleration due to gravity is g = 9.8 m/s2.
Wednesday, June 25, 2014 at 12:26pm

physics
What is the acceleration of an object if it takes 10 seconds to increase its velocity by 40m/seconds?
Wednesday, June 25, 2014 at 10:36am

Physics
. A stone is dropped from the top of a building that is 500m high. Disregarding air resistance how long does it take the stone to reach the ground?
Wednesday, June 25, 2014 at 6:12am

physics
A car and driver weighing 7750 N passes a sign stating “Bridge Out 28.5 m Ahead.” She slams on the brakes, and the car decelerates at a constant rate of 10.6 m/s2 . The acceleration of gravity is 9.8 m/s2 . What is the magnitude of the work done stopping the car if ...
Tuesday, June 24, 2014 at 10:24pm

physics
A spring with spring constant of 30 N/m is stretched 0.19 m from its equilibrium position. How much work must be done to stretch it an additional 0.077 m? Answer in units of J
Tuesday, June 24, 2014 at 10:23pm

physics
A motor boat whose speed is 2.6 m/s in still water, needs to point upstream at an angle of 28.5 in order to travel straight across the river. Calculate the speed of the current and the resultant velocity of the boat across the river.
Tuesday, June 24, 2014 at 9:46pm

Physics
1. A person runs 800. m at an average speed of 6.00 m/s and then the next 800. m at an average speed of 8.00 m/s. Calculate (a) the total time of travel and (b) the average speed. 2. Sam travels by car from one city to another. He drives for 45.0 min at 95.0 km/h, 30.0 min at ...
Tuesday, June 24, 2014 at 8:41pm

Physics
On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 25deg west of north. Your average velocity is 2.0 m/s in the same direction as the displacement. Calculate (a) your walking time and (b) your average speed.
Tuesday, June 24, 2014 at 8:35pm

physics
Match the process with the fundamental interaction responsible for this process. 1)A falling object slows down from a great speed to its terminal velocity. 2)An apple is held off the ground by the surface of a table.
Tuesday, June 24, 2014 at 7:55pm

physics
A 236 kg block is released at a 4.2 m height as shown. The track is frictionless except for a portion of length 6.2 m . The block travels down the track, hits a spring of force constant k = 1483 N/m . The coefficient of kinetic fric- tion between surface and block over the 6.2...
Tuesday, June 24, 2014 at 2:03pm

physics
in a bag there are 20 red 30black 40 blue50 white balls. what is the minimum number of balls to be drawn without replacement so that you are certsin about getting 4 red,5 black,6 blue,7 white balls
Tuesday, June 24, 2014 at 1:55pm

Physics
A particle is moving along a straight line and its position is given by the relation x=( t3-6t2-15t+40)mm. Find:- (a). The time at which velocity is zero. (b). Position & displacement of the particle at that point. (c). Acceleration for the particle at that line.
Tuesday, June 24, 2014 at 11:52am

Physics
A disgruntled physics student sees the front end of his teacher's car below him at the base of a building. If the student is 5.0 m high above the car which is 3.0 m long and traveling only 3m/s to the right, will the apple of the student hit the teacher's car? What is ...
Tuesday, June 24, 2014 at 10:24am

Physics
A disgruntled physics student sees the front end of his teacher's car below him at the base of a building. If the student is 5.0 m high above the car which is 3.0 m long and traveling only 3m/s to the right, will the apple of the student hit the teacher's car?
Tuesday, June 24, 2014 at 10:01am

physics
For a football player bending the ball around a defensive wall, state three principles which govern the flight path of the ball and the amount of spin imparted on to the ball? (3 marks) please help?
Tuesday, June 24, 2014 at 9:16am

physics
my physics teacher said that in simple harmonic motion of simple pendulum the direction of torque acting is opposite to angular displacement now i am wondering how ?as angular displacement is either anticlockwise or clockwise and torque direction is outward or inward to the ...
Tuesday, June 24, 2014 at 8:23am

physics
on his way to school,jed traveled 100 m north,300 m east,100 m north,100 m east,100 m north.
Tuesday, June 24, 2014 at 6:12am

physics
A baseball pitcher throws a baseball horizontally at a linear speed of 50.6 m/s. Before being caught, the baseball travels a horizontal distance of 24.9 m and rotates through an angle of 54.5 rad. The baseball has a radius of 3.43 cm and is rotating about an axis as it travels...
Monday, June 23, 2014 at 11:12pm

physics
Water is flowing into a factory in a horizontal pipe with a radius of 0.0223 m at ground level. This pipe is then connected to another horizontal pipe with a radius of 0.0400 m on a floor of the factory that is 10.6 m higher. The connection is made with a vertical section of ...
Monday, June 23, 2014 at 10:09pm

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