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A worker pushes horizontally on a large crate with a force of 299 N, and the crate is moved 5.5 m. How much work was done?
The Honda accelerates, and when it is traveling at 23.0 m/s, the Porsche starts. How far do the cars travel from the starting point before the Porsche catches up with the Honda?
What do you use to find a sclerenchyma's structure?
Two simple pendulums have length of 81 cm and 64 cm they are released from the same angular position at the same instant. After how much time will they both arrive at their initial position simulta
A 9.0 V battery is connected to a bulb whose resistance is 2.5 . How many electrons leave the battery per minute?
A cluster of galaxies has a radius of about 5.2 million light-years (4.9×10^22 ) and an intracluster medium with a temperature of (6.5×10^7) K. Estimate the mass of the cluster. Give yo
In many countries, conservationalists are trying to design national park systems so that "islands" of natural area are connected by thin "corridors" of undisturbed habitat. The idea is that this arran
A 9.80 kg object oscillates at the end of a vertical spring that has a spring constant of 1.75 104 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N·s/m.
The craft has velocity components of vx = 3785 m/s and vy = 4096 m/s. Find the magnitude and direction of the initial velocity. Express the direction as an angle with respect to the +x axis.
Two identical perfect gases with the same pressure P and the same number of particles N, but different temperature T1 and T2, are confined in two vessels, of volume V1 and V2, which are then connec
What is the driving force for the movement of materials in the phloem of plants?
A laser with wavelength d/8 is shining light on a double slit with slit separation 0.300 {rm mm}. This results in an interference pattern on a screen a distance L away from the slits. We wish to shi
Explain the relationship between the change in mass and the molarity of sucrose within the potato cores
If the speed of sound is 330 m/s, how many seconds after the whistle is heard at the crossing will the train cross there?
When one person was talking in a small room, tyhe sound intensity level was dB every where within the room. then, there were 14 people talking in similar manner simultaneously in the room, what was
What is the chief purpose of the photosynthetic purpose?
At the end of the firing period, the craft has velocity components of vx = 3610 m/s and vy = 5138 m/s. Find the magnitude and direction of the initial velocity. Express the direction as an angle wit
A 9 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by a constant, horizontal force of 14.4 N. Find the speed of the block after it has moved 3.6 m.
Identify the action reaction pairs of forces for the following you step off a curb
Unattached earlobes are a dominant trait. If A denotes the allele for unattached earlobes, and a denotes the allele for attached earlobes, what is (are) the possible genotype(s) of a person who has un
A speeding motorist traveling 80 mi/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 7 ft/s sq. how much time in seconds will it toake the
Create a 10- to-12 slide powerpoint presentation on behaviorism and social-learning theory. Include speaker notes and graphics, limit text to fie lines, and use approximately five words per bulleted
Why do some scientists say to eat a certain amount of each a day?
A 11.2 kg object oscillates at the end of a vertical spring that has a spring constant of 2.10 104 N/m. The effect of air resistance is represented by the damping coefficient b = 3.00 N·s/m.
List the main reason why a cell is forced to divide due to cell growth.