##### What are the advantages and disadvantages of connecting batteries in series, and what are the advantages...

What are the advantages and disadvantages of connecting batteries in series, and what are the advantages and disadvantages of connecting batteries in parallel?

In: Physics

##### You are standing on a sheet of ice that covers the football stadium parking lot in...

You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. A friend throws you a 0.370kg ball that is traveling horizontally at 9.00m/s . Your mass is 67.5kg .

Part A:If you catch the ball, with what speed do you and the ball move afterwards?

Part B:If the ball hits you and bounces off your chest, so that afterwards it is moving horizontally at 8.25

m/s in the opposite direction, what is your speed after the collision?

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##### A metal sphere carrying an evenly distributed charge will have spherical equipotential surfaces surrounding it. Suppose...

A metal sphere carrying an evenly distributed charge will have spherical equipotential surfaces surrounding it. Suppose the sphere❝s radius is 52.5cm and it carries a total charge of +1.45μC .

A)
Calculate the potential of the sphere❝s surface.(with the appropriate)

B)
You want to draw equipotential surfaces at intervals of 500 V

outside the sphere❝s surface. Calculate the distance between the first and the second equipotential surfaces, and between the 20th and 21st equipotential surfaces.

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##### 3. Does the magnetic field due to the Earth affect your result of the e/m ratio?...

3. Does the magnetic field due to the Earth affect your result of the e/m ratio? Explain�

4. Compare trajectories of electrons and protons moving with the same speed in the magnetic field produced by the Helmholtz coils?

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##### 1.What does the "Total Energy - Time" graph tell you about the toal energy of the...

1.What does the "Total Energy - Time" graph tell you about the toal energy of the ball as it falls?

2.What is one reason that some of the energy is lost as the ball falls?

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##### If you travel by starship to the center of the galaxy, such that you arrive within...

If you travel by starship to the center of the galaxy, such that you arrive within a subjective human lifespan, how much radiation damage will you suffer from the interstellar “vacuum” (i.e., from the atoms in interstellar space)? Assume that special relativity holds and ignore the problems of accelerating and decelerating the spacecraft.

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##### A laboratory cell with volume of 0.007769 ft3 contains 0.001941 lb-moles mixture given in the table...

A laboratory cell with volume of 0.007769 ft3 contains 0.001941 lb-moles mixture given in the table below. Temperature is to be raised to 80OF, using Soave-Redlich-Kwong (SRK) equation of state calculate the expected pressure to be. Compare your results with experimental results of 1200 psia + 2 %. Component Composition, mole fraction Acentric factor (?) Methane 0.85 0.0104 Ethane 0.1 0.0979 Propane 0.05 0.1522 use values of zero for binary interaction coefficients

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##### Define tensile strength. Explain how polymers are characterized vis-à-vis differences in tensile stress-strain behavior.

1. Define tensile strength. Explain how polymers are characterized vis-à-vis differences in tensile stress-strain behavior.

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##### Air flows through this tube at a rate of 1400cm3/s . Assume that air is an...

Air flows through this tube at a rate of 1400cm3/s . Assume that air is an ideal fluid.

What is the height h of mercury in the right side of the U-tube?

In: Physics

##### you have a parallel-plate capacitor a.) determine the electric field between the plates if there is...

you have a parallel-plate capacitor
a.) determine the electric field between the plates if there is a 120 V potential dofference across the plated and they are separated by 0.5 cm
b.) A spark will jump if the magnitude of the electrix field between the plates exceeds 3.0x10^6 V/m when air separates the plates. what is the closest the plated can be place to esch ither without sparking
c.) if a dialectric (k=2.5) is inserted between the plates how will that affect the answers to a.) and b.) explain

need help with C

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##### A tall tree is growing across a river from you. You would like to know the...

A tall tree is growing across a river from you. You would like to know the distance between yourself and the tree,as well as its height, but are unable to make the measurements directly. However, by using a mirror to form an image of the tree and then measuring the image distance and the image height, you can calculate the distance to the tree as well as its height. Suppose that this mirror produces an image of the sun, and the image is located 0.8610 m from the mirror. The same mirror is then used to produce an image of the tree. The image of the tree is 0.9902 m from the mirror. (a) How far away is the tree? (b) The image height of the tree has a magnitude of 0.20 m. How tall is the tree?

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##### A proton beam is used to irradiate a tumor. The beam is created starting with hydrogen...

A proton beam is used to irradiate a tumor. The beam is created starting with hydrogen gas, ripping off the electrons, and extracting the protons in an electric field. The protons are accelerated from approximately rest across a potential difference totaling 8.3 million Volts. The speed of the protons after acceleration is …

show step by step answer should be 4.0x10^7 m/s

In: Physics

##### Two 14-cm-diameter electrodes 0.44 cm apart form a parallel-plate capacitor. The electrodes are attached by metal...

Two 14-cm-diameter electrodes 0.44 cm apart form a parallel-plate capacitor. The electrodes are attached by metal wires to the terminals of a 20 V battery.

A. What are the charge on each electrode, the electric field strength inside the capacitor, and the potential difference between the electrodes while the capacitor is attached to the battery? Find Q, E, and ∆V.

B. What are the charge on each electrode, the electric field strength inside the capacitor, and the potential difference between the electrodes after insulating handles are used to pull the electrodes away from each other until they are 0.88 cm apart? The electrodes remain connected to the battery during this process. Find Q, E, and ∆V.

C. What are the charge on each electrode, the electric field strength inside the capacitor, and the potential difference between the electrodes after the original electrodes (not the modified electrodes of part B) are expanded until they are 28 cm in diameter while remaining connected to the battery? Find Q, E, and ∆V.

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##### The tallest cliffs ever discovered in our solar system are located on Uranus’s moon Miranda (g=0.0772...

The tallest cliffs ever discovered in our solar system are located on Uranus’s moon Miranda (g=0.0772 m/s^2 ). If you were to drop a rock off of one of these cliffs, it would take 12 minutes to hit the bottom. a. How high is the cliff? b. What is the speed of the rock when it hits the bottom?

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##### In a belt drive the motor pulley has a diameter of 250 mm and rotates at...

In a belt drive the motor pulley has a diameter of 250 mm and rotates at 420 RPM. The machine pulley diameter is 350mm.

a) Determine the linear velocity of the belt and the rotational frequency of the machine pulley.

b) If the motor pulley accelerates from rest at 2 rads/s^2 how long does it take the motor pulley to reach 420 RPM.

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