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In outer space a rock of mass 6 kg is attached to a long spring and swung at constant speed in a circle of radius 7.5 m. The spring exerts a force of constant magnitude 660 N. What is the speed of t
What affects Florence Nightingale have in the microbiology world?
An electron (mass ) is accelerated in the uniform field between two parallel charged plates. The separation of the plates is 0.930 . The electron is accelerated from rest near the negative plate an
Animals always want to get the most from their resources by increasing the surface area throughout their organ systems. Please cite 5 examples and how it does this.
A superhero flies 185m from the top of a tall building at an angle of 25 degrees below the horizontal. What is the horizontal component of the superhero's displacement?
To water the yard, you use a hose with a diameter of 2.5 cm. Water flows from the hose with a speed of 1.3 m/s. If you partially block the end of the hose so the effective diameter is now 0.55 cm,
What is the role of genetic engineering in personalized medicine?
The volume of an ideal gas changes from 0.40 to 0.55 meters cube although its pressure remains constant at 50 000 Pa. What work is done on the system by its environment?
Explain the process of development of the female genitalia.
A dipole consisting of charges 230 apart, is placed between two very large (essentially infinite) sheets carrying equal but opposite charge densities of 145. What is the maximum potential energy thi
A diver 60 deep in 10 fresh water exhales a 1.5-cm-diameter bubbleWhat is the bubble's diameter just as it reaches the surface of the lake, where the water temperature is 20 ? Assume that the air b
Water flows steadily from an open tank. The elevation of point 1 is 10.0 m, and the elevation of points 2 and 3 is 2.00 m. The cross-sectional area at point 2 is 0.0480 m 2; at point 3 it is 0.0160
Write a one page description detailing the flow of electrons in the electron transport chain of the light dependent reaction in photosynthesis using two sources of H+,
A man takes his dog out for a walk. The dog has no legs and is dragged along the sidewalk on a little sled (mass of dog + sled = 13.0kg). The sidewalk exerts a frictional force of 14.0N. If the man
A gorilla weighs 8.00*10^2N and swingsfrom vine to vine. as the gorilla grabs a new vine, both vines make an angle of 30.0 degrees with the vertical. in such a condition of state of equilibrium, wh
The bullet strikes the board with a speed of 455 m/s and emerges with a speed of 279 m/s. (To simplify, assume that the bullet accelerates only while the front tip is in contact with the wood.) Wha
a 10.0 kg box starts at rest and slides 3.5 m down a ramp inclined at an angle of 20 degrees with the horizontal. if the coefficient of friction between the ramp surface and the crate is 0.18, what
A 78-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.74 s. The elevator travels with this constant speed for 5.0
A 10.5 g bullet embeds itself in a 0.450 kg block, which is attached to a spring of force constant 30.2 N/m. If the maximum compression of the spring is 1.7 cm, find the following. Find the time for
A steel safe with mass 2200 kg falls onto concrete. Just before hitting the concrete its speed is 40 m/s, and it smashes without rebounding and ends up being 0.06 m shorter than before. What is the
a 6-kg, 5-m ladder leans against a frictionless wall. the foot of the ladder is 3m from the wall. the coefficient of friction between the foot of the ladder and the floor is 0.38. what is the direct
The russell traction system shown below is used for a fractured femur. identify the forces acting on the femur. if the weigh hang is 5.0kg, find the force needed to immobilize the femur. what will
Why is the smooth muscle also known as unstriated muscle?
A 0.2 kg aluminum plate, initially at 20 C, slides down at a 15 m long surface, incline at a 30 degree angle to the horizontal. The force of kinetic friction exactly balances the component of gravi