A student stands at the edge of a cliff and throws stone horizontally over the edge with a speed of V = 22.5 m/s. The cliff is h = 54.0 m above a flat, horizontal beach as shown in the figure. Ⓡ (a) What are the coordinates of the initial position of the stone? xo = | m Yo = Vx= Vy Vo (b) What are the components of the initial velocity? Vox = m/s m/s Voy= (c) Write the equations for the x- and y-components of the velocity of the stone with time. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not include units in your answer.) x= 7 m y= x (d) Write the equations for the position of the stone with time, using the coordinates in the figure. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not state units in your answer.) v₁= 0 = (e) How long after being released does the stone strike the beach below the cliff? s (f) with what speed and angle of impact does the stone land? m/s below the horizontal

Jou pour of hat coffee into 750 aluminum SesL mess is 2sOg. You measured He 90°C. You thee cup -hose mass îs +emp of the estfee to be place 100g - (0°e into the coffee, wlaat will be the final initial temp ice, whese is eguilibriom te mp? :4186 Cice i2000 Car= 300 Licaz 334000

A solution of hydrochloric acid was electrolyzed in a Hittorf cell between platinum electrodes. The cathode compartment contained 0.177 g of chloride ions before electrolysis and 0.163 g afterwards. A silver coulometer in series had a deposit of 0.2508 g of silver.What are the transport numbers of H+ and Cl- ions? [0.83; 0.170] The answers are written inside the bracket. I would like to know how they were obtained. Thank you!

. A typical smartphone Li-Ion battery has a nominal voltage of 3.7 V and is rated at 4200 mAh.Assuming the voltage remains constant a.) Compute the standby current from the battery if itlast 7 hours standby time from 100% to depletion. b.) assuming intensive gaming the phoneconsumes 1.50 A, how long will the battery last from 100% to 0%? c.) Compute the storedenergy of the fully charge battery in joules.

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Please Answer this im begging you. begin begin youhuhu The problem is IIc - 21, from the book ENGINEERING THERMOFLUIDS, M. MASSOUD.

Topic: Wed 12/8 Reading Quiz canceled... Review Homework 2. Classify the above reaction. Choose among one or more from com combustion. 6. Circuit Consider the following setup V R2 R1 1. Are R1 and R2 connected in series or parallel? 2. If R1 = 20kN and R2 = 40KN what is the equivalent resistance? 7 Falling Rock A rock is dropped off of a cliff. It takes 2.8s for the rock to reach the 9.81. How tall is the cliff? 8 Middle C and C# Middle C has a frequency of 261.63HZ. The note C# has a frequency of a particular piano us 40.0cm long. How long must the C# string be if it therefore the same wave velocity) as the C string? ww ww

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A wire sample (0.75 mm in diameter and 20 cm in length) is placed in anelectrical circuit. A voltage drop of 464 mV is measured across the length ofthe wire as it carries a 2 A current. Calculate the electrical conductivity of thisalloy. From Table 4 below, which gives the conductivities of differentmaterials at 20C, identify the material. MaterialElectrical Conductivity(Sm-1)Manganin 2x106Nickel 14x106Aluminium 30x106Copper 50x106Silver 63x106Table 4. Conductivities of different materials at 20 C.