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A gardener pushes a box of tools across a driveway by applying a 27.5- N force that pushes downward at an angle of 32.0 o with respect to the horizontal. How much work is done if the box moves 4.25
What are systems that had to evolve to support cellular respiration in multicellular animals
To which structure would you assign the function of secretion activities leading, for example, to the formation of a new cell wall in plants?
A player kicks a soccer ball from ground level and sends it flying at an angle of 30 degrees at a speed of 26 m/s. What is the maximum height attained by the ball? Round the answer to the nearest t
A ballast bag is released from rest relative to the balloon when it is 3.65 m above the ground. How much time elapses before the ballast bag hits the ground?
From the knowledge about the distribution of electrons in the levels and from the atomic number (in parentheses), indicate the most likely charge on the ion when this atom forms an ion (Remember the 2
The average sun-earth distance is 1.496 × 1011 m. What is the apparent angle the diameter of the moon subtends, as seen from the earth?
A particle's position, captured by a strobe camera, is shown below. The positions have been labeled times t0 through t8. The time intervals are equally separated. What can describe the instantaneou
You are the biologist in a group of scientists who have traveled to a distant star system and landed on a planet. You see an astounding array of shapes and forms. You have three days to take samples o
The 12.0 cm dimension is vertical and the top of the block is 5.10 cm below the surface of the water. What is the reading of the spring scale?
In the next sequence, we see a person diving from a board and a leaf falling from a tree. It is stated that the speed of a falling body increases as it falls. If the statement concerning falling bod
Find the frictional force exerted on block A given that the mass of block A is 8.80 kg, the mass of block B is 2.48 kg, and the coefficient of static friction between block A and the surface on whi
The Sears Tower in Chicago is 110 stories (436 m) above street level, and the roof of the tower is 442 m above the street. Assume that a golf ball is thrown down from the roof of the Sears Tower.
A circular orbit about a proton where the radius is 0.51 X 10^-10m. Find the electrostatic force between the electron and proton and the electrons speed.
When a certain pure strain of fruit fly is cultured at temp of 16 C all the fruit fly will develop straight wings. the offspring of these flies will develop curly wings if they are developed at 25 C t
A car moving on a straight road starting from rest, travels 0.40 km in 9 s. What is the magnitude of the constant acceleration required to do this?
Uniform electric field and is accelerated to 1% of the speed of light after traveling 2.0 mm, what is the strength of the electric field and speed of the electron have after traveling 4 mm?
Which the following produces the most atp when glucose C6H12O6 is completely oxidized to carbon dioxide co2 and water?
In a common lecture demonstration of wave pulses, a piece of rubber tubing is tied at one end to a fixed post and is passed over a pulley to a mass hanging at the other end. Suppose that the distanc
A skateboarder shoots off a ramp with a velocity of 6.9 m/s, directed at an angle of 54° above the horizontal. The end of the ramp is 1.1 m above the ground.
What are the two major functions of the tricarboxylicacid (TCA) pathway?
Assume that the air pressure is 0.85 atm and calculate your answer in Newtons per meter squared (N/m^2), otherwise known as pascals (pa).
A dolphin leaps out of the water at an angle of 35 degrees above the horizontal. The horizontal component of teh dolphin's velocity is 7.7 m/s. Find the magnitude of the verticle component of the v
An automobile enters a 100.0 deg curve with a speed of 30.0 m/s and emerges from this curve 14.00 s later with the same speed. What is the magnitude of the acceleration during this time interval (i
Animals tend to maximize their energy intake-to-expenditure ratio. What is this behavior called?