Get college assignment help at uniessay writers a gry is an old english measure for lenght, defined as 1/10 of a line, where line is another old English measure for lenght, defined as 1/12 inch. A common measure for length in the publishing business is a point, defined as 1/72 inch. What is an area of 0.50 gry squared in points squared? Round answer to the nearest hundreth.
A 4.8kg aluminum block and a 9kg copper block are connected by a light string over a frictionless pulley. They sit on a steel surface, where theta= 38.5. The coefficient of static friction of copper on steel is .53. The coefficient of kinetic friction of copper on steel is .36. The coefficient of static friction of aluminum on steel is .61. Coefficient of kinetic friction of aluminum on steel is .47. When they are relaeased from rest will they start to move? If so determine their acceleraton and the tension in the string. If not determine the sum of the magnitudes of the forces of friction acting on the blocks.
three uniform thin rods, each of length L = 35 cm, form an inverted U. The vertical rods each have a mass of 18 g; the horizontal rod has a mass of 35 g. What are (a) the x coordinate and (b) the y coordinate of the system’s center of mass? (Give your answer in cm)
An aluminum block of mass m1= 4.80 kg and a copper block of mass m2= 9 kg are connected by a light string over a frictionless pulley. They are on a steel surface as shown below, where theta= 38.5. The coefficient of static friction of copper on steel is .53. The coefficient of kinetic friction of copper on steel is .36. The coefficient of static friction of aluminum on steel is .61. The coefficient of kinetic friction of aluminum on steel is .47. When they are released from rest, will they start to move? If the blocks move determine the magnitude of their acceleration. If the blocks move determine the magnitude of the tension in the string. If the blocks do not move determine the sum of the magnitude of the forces of friction acting on the blocks. Show all work.
A water molecule consists of an oxygen atom with two hydrogen atoms bound to it. The angle between the two bonds is 106°. If the bonds are 0.100 nm long, where is the center of mass of the molecule?
A 2200-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 7.00 m before coming into contact with the top of the beam, and it drives the beam 14.0 cm farther into the ground as it comes to rest. Using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest.
what is the apparent weight of a 75 kg astronaut 4200km from the center of the earths moon in a space vehicle (a) moving at constant velocity and (b) accelerating toward the moon at 2.9m/ss
Two friends, Al and Jo, have a combined mass of 161 kg. At an ice skating rink they stand close together on skates, at rest and facing each other, with a compressed spring between them. The spring is kept from pushing them apart, because they are holding each other. When they release their arms, Al moves off in one direction at a speed of 0.658 m/s, while Jo moves off in the opposite direction at a speed of 1.38 m/s. Assuming that friction is negligible, find Al’s mass.
Determine how many calories of heat must be removed to change 100g of vapor at 240°C to solid at 20°C. Consider the following properties of the substance: heat of fusion 300 cal/g, heat of vaporization 600 cal/g, specific heat capacity as a liquid -0.75 cal/g-Co, melting point at 20°C and boiling point of 240°C.
A 55.0-Ω resistor is connected in parallel with a 115.0-Ω resistor. This parallel group is connected in series with a 21.0-Ω resistor. The total combination is connected across a 15.0-V battery.
Get college assignment help at uniessay writers An airplane, whose air speed is 380 km/hr, is supposed to fly in a straight line 23.0 degrees north of due east. A steady 100 km/hr is blowing from the north. In what direction should the plane head realative to the earth?
A lens which is 40.0 cm from an object forms an image of the object on a card 20.0 cm away. What is the focal length of the lens? If the height of the image is .75 cm, what is the height of the object?
Gayle runs at a speed of 3.90 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 16.0 m? Gayle’s mass is 50.0 kg, the sled has a mass of 5.00 kg and her brother has a mass of 30.0 kg.
A 93 arrow is fired from a bow whose string exerts an average force of 115 on the arrow over a distance of 75 . What is the speed of the arrow as it leaves the bow?
An object is moving so that its kinetic energy is 174 J and the magnitude of its momentum is 40.5 kg · m/s. Determine the speed of the object. Answer in units of m/s.
Please see attachment. Thanks/David
The barrel of a rifle has a length of 0.898 m. A bullet leaves the muzzle of a rifle with a speed of 616 m/s. What is the acceleration of the bullet while in the barrel? A bullet in a rifle barrel does not have constant acceleration, but constant acceleration is to be assumed for this problem. Answer in units of m/s2.
the distance between Polaris and Earth in meters
A rifle is aimed horizontally at a target 52.0 away. The bullet hits the target 2.40 below the aim point What was the bullet’s flight time?
1)A stone with a mass of 0.900kg is attached to one end of a string 0.900 m long. The string will break if its tension exceeds 60.0 N . The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string remains fixed.Find the maximum speed the stone can attain without breaking the string. 2)What gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0 fm Im using F=Gm1m2/r^2 for the second problem but cant get the right answer.
A spring with 55 hangs vertically next to a ruler. The end of the spring is next to the 20- mark on the ruler.If a 3.0- mass is now attached to the end of the spring, where will the end of the spring line up with the ruler marks?
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