Measuring Density with a Hydrometer A hydrometer, a device for measuring fluid density, is constructed as shown in Figure 15-42 . If the hydrometer samples fluid 1, the small float inside the tube is submerged to level 1. When fluid 2 is sampled, the float is submerged to level 2. Is the density of fluid 1 greater than, less than, or equal to the density of fluid 2? (This is how mechanics test your antifreeze level. Since antifreeze [ethylene glycol] is more dense than water the higher the density of coolant in your radiator the more antifreeze protection you have.) Figure 15-42
Measuring Density with a Hydrometer A hydrometer, a device for measuring fluid density, is constructed as shown in Figure 15-42 . If the hydrometer samples fluid 1, the small float inside the tube is submerged to level 1. When fluid 2 is sampled, the float is submerged to level 2. Is the density of fluid 1 greater than, less than, or equal to the density of fluid 2? (This is how mechanics test your antifreeze level. Since antifreeze [ethylene glycol] is more dense than water the higher the density of coolant in your radiator the more antifreeze protection you have.) Figure 15-42
Measuring Density with a Hydrometer A hydrometer, a device for measuring fluid density, is constructed as shown in Figure 15-42. If the hydrometer samples fluid 1, the small float inside the tube is submerged to level 1. When fluid 2 is sampled, the float is submerged to level 2. Is the density of fluid 1 greater than, less than, or equal to the density of fluid 2? (This is how mechanics test your antifreeze level. Since antifreeze [ethylene glycol] is more dense than water the higher the density of coolant in your radiator the more antifreeze protection you have.)
For single-slit diffraction, calculate the first three values of (the total phase difference between rays from each
edge of the slit) that produce subsidiary maxima by a) using the phasor model, b) setting dr = 0, where I is
given by,
I
=
Io (sin (10) ².
2
A capacitor with a capacitance of C = 5.95×10−5 F is charged by connecting it to a 12.5 −V battery. The capacitor is then disconnected from the battery and connected across an inductor with an inductance of L = 1.55 H .
(D)What is the charge on the capacitor 0.0235 s after the connection to the inductor is made? Interpret the sign of your answer. (e) At the time given in part (d), what is the current in the inductor? Interpret the sign of your answer. (f) Atthe time given in part (d), how much electrical energy is stored in the capacitor and how much is stored in the inductor?
Close-up view
etermine;
The volume of the object given that the initial level of water in the measuring cylinder
23cm3.
The density of the object.
simple cell made by dipping copper and zinc plates into dilute sulfuric acid solution. A bull
onnected across the plates using a wire.
State what constitute current flow through the wire
The bulb connected across is observed to light for some time and then goes out. State t
possible
asons for this observation.
State two ways in which the processes named in question (b) above can be minimized t
the bulb light for a longer period.
ead
is rated 80Ah. Determine the current that can be drawn continuously
Chapter 15 Solutions
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