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7.5/10 points I Previous Answers SerPSE 10 2.7 0P 020 A block slides across a frictionless horizontal surface with constant acceleration 3.30 m/s? and over a time interval reaches a final (a) If its initial velocity is 6.90 m/s, what is its displacement (in m) during the time interval? (Indicate the dire 1641 (b) What is the distance it travels (in m) during this interval? 21.641 s, what is its displacement (in m) during the time interval? (Indicate the direction with the sign of your answer.) 21 641 (d) What is the total distance it travels (in m) during the interval in part (c)2 -108.2 momentarily stop, change direction, and speed off in the opposite dire the distance traveled is the same as the magnitude of the disp negative while the object is slowing and positive while it is speeding up. For a negative displacement, t

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A student throws a set of keys vertically upward to her sorority sister, who is in a window 2.80 m above. The second student catches the keys 1.80 s later.

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A Student Throws A Set Of Keys Vertically Upward To Her Sorority Sister, Who Is In A Window 2.80 M Above. The Second Student Catches The Keys 1.80 S Later. (a) With what initial velocity were the keys thrown? magnitude = m/s (b) What was the velocity of the keys just before they were caught? …

A student throws a set of keys vertically upward to her sorority sister, who is in a window 2.80 m above. The second student catches the keys 1.80 s later. Read More »

A repeating rifle fires 2 LR bullets such that as they travel down the barrel of the rifle their speed is given by v = (-4.65 x 10?)2 + (2.30 x 105), where v is in meters per second and t is in seconds. The acceleration of the bullet just as it leaves the barrel is zero. (a) Determine the acceleration in m/s) and position (in m) of the bullet as a function of time when the bullet is in the barrel. (Use the following as necessary: t. Round all numerical coefficients to at least three significant figures. Do not include units in your answers. Assume that the position of the bullet att is zero.) a(t) – m’s x(t) = (b) Determine the length of time the bullet is accelerated (in s). (c) Find the speed at which the bullet leaves the bprrel (in m/s). m/s (d) What is the length of the barrel (in m)?

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D11.6 At frequencies of 1, 100, and 3000 MHz, the dielectric constants of ice made from pure water has values of 4.15, 3.44, and 3.20 respectively, while (epsilon”/epsilon’) is 0.12, 0.035, and 0.0009, also respectively. If a uniform plane wave with an amplitude of 100 V/m at z=0 is propagating through such, find the time-average power density z=0 and z=10m for each frequency. The answers are: 27.1 and 25.7W/m^2; 24.7 and 6.31 W/m^2; 23,7 and 8.63 W/m^2. pleace show all steps.

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D11.6 At frequencies of 1, 100, and 3000 MHz, the dielectric constants of ice made from pure water has values of 4.15, 3.44, and 3.20 respectively, while (epsilon”/epsilon’) is 0.12, 0.035, and 0.0009, also respectively. If a uniform plane wave with an amplitude of 100 V/m at z=0 is propagating through such, find the time-average …

D11.6 At frequencies of 1, 100, and 3000 MHz, the dielectric constants of ice made from pure water has values of 4.15, 3.44, and 3.20 respectively, while (epsilon”/epsilon’) is 0.12, 0.035, and 0.0009, also respectively. If a uniform plane wave with an amplitude of 100 V/m at z=0 is propagating through such, find the time-average power density z=0 and z=10m for each frequency. The answers are: 27.1 and 25.7W/m^2; 24.7 and 6.31 W/m^2; 23,7 and 8.63 W/m^2. pleace show all steps. Read More »

1) Two parallel flat planes of positive charge are separated by a distance d. Plane #1 has charge density 1, and plane #2 has a charge density 2 and 1> 2. (a) In the region between the planes, the magnitude of the electric field is? (b) In the region outside the planes the magnitude of the electric field is?

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1) Two parallel flat planes of positive charge are separated by a distance d. Plane #1 hascharge density 1, and plane #2 has a charge density 2 and 1> 2.(a) In the region between the planes, the magnitude of the electric field is?(b) In the region outside the planes the magnitude of the electric field …

1) Two parallel flat planes of positive charge are separated by a distance d. Plane #1 has charge density 1, and plane #2 has a charge density 2 and 1> 2. (a) In the region between the planes, the magnitude of the electric field is? (b) In the region outside the planes the magnitude of the electric field is? Read More »

If the rate of formation of ammonia is 0.345 M/s, what is the rate of disappearance of N2?

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If the rate of formation of ammonia is 0.345 M/s, what is the rate of disappearance of N2? EXPERT ANSWER The balanced reaction is : N2 (g) + 3 H2 (g)  2 NH3 (g) Rate of reaction = –[N2]/t = -(1/3) *  [H2]/t = (1/2) *  [NH3]/t Given :  [NH3]/t = 0.345 M/s –[N2]/t = (1/2) *  [NH3]/t –[N2]/t = (1/2) * (0.345 M/s) …

If the rate of formation of ammonia is 0.345 M/s, what is the rate of disappearance of N2? Read More »

as in this lab? If AG is negative the process is spontaneous. If AG is positive the process is non spontaneous b. The following process is endothermie. Would you expect the physical change from solid to liquid to be spontaneous? Why or why not? H.0(s) – 1.00 at 22 ( require energy a Yes it would be spontaneous, because it doesn’t for Solid How to become liquid at 25°co c. The standard enthalpy change for this process is DW-6.01 kJ/mol. What is the minimum value for the standard entropy change, based on your conclusions about the spontaneity? AS = ΔΗ. T 60105/mol 298k 6.01 KT (1000) = 6010 5/mol – 20.25/molk Results 22.0°C Tral Trial 2 Mass of NaNO, and weigh boat Mass of weigh boat (a) Mass of NaNO, AT= 17.5-22.0=-4.50 Final (Min.) temperature (°C) 8.585 175128 22.012.3 14.5145 Initial (Max) temperature (°C) Temperature change (AT) 100g/mol 1. Calculate the amount of heat energy. 9. produced in each reaction. Use o’ml for the density of water. Use the specific heat of water, 4.18 J/g °C). for all solutions. Calculate the number of moles of NaNO, as shown in the lab discussion. Calculate the enthalpy change, AH, for each reaction in terms of kJ/mol of each reactant. SHOW ALL CALCULATIONS. Msolofion = 100g +8.5g = 108.5g 19:(-108.59) (118318:P)-4.5°9 = 2.04 x.103 J Cook 8.5gx 11 mol 84.99 -2.04J = 0.100 mol 2.04×1035 1000 KS 20.4 kJ/mol AH=2.0485 6.10mol Trial Trial Triall 2.04×10²J 0.100 mol .20.4 kJ/mol Trial 2 २ 2.04×10²J 0.100 mol 20.4 kJ/mol Number of moles of NaNO, TH (kulmolo) Average OW- -20.4 kJ/mol Questions 2. Is the process you studied in the lab spontaneous or nonspontaneous? Why? NaNO,() . Na'(a)+NO; (ay) Spontaneous reaction. ” ДИКО 3. Based on looking at the above reaction, would you expect there to be an increase (As > 0) or decreases

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