Hello,

please answer the following questions, no work is needed just please choose options from the screenshots ONLY.

Three blocks with three different masses (m1, m2, and m3) are set on three planes inclined at the same angle as shown. There is kinetic friction between the blocks and the planes and all three blocks are moving down the planes at a constant velocity. If the force of kinetic friction is the same in all three cases, which statements are TRUE? More than one may be correct. Do not assume that the coefcient of kinetic friction is the same in all three cases - it may be different. 3 m1 is larger than m3 3 m3 is equal to m1 3 m2 is equal to m3 3 m2 is larger than m1 3 m3 is larger than m2 :1 m1 is equal to m2 In each of the 2 cases shown, a block with mass M begins moving along a frictionless surface with an initial speed, v0 (the solid-colored block on the solid line). M and V0 are the same in each case. The block then moves onto a surface where there is a coefcient of kinetic friction between the block and the surface (the dotted line). The coefcient of kinetic friction may have different values in each case. The block then comes to a rest (the unlled block). The nal difference in vertical height between the center of mass of the block in its initial position and its nal position is the same Ah in each case. \"0 Ah (> l-lk "0 v=0 A\" El In which case does friction do the largest magnitude of work? Q We can't say without knowing the angles of the inclines. 0 Case 2 0 Friction does no work in either case. O Friction does the same nonzero magnitude work in both cases. O Case 1 A bat uses echolocation to hunt a moth. Specifically, the bat emits short ultrasound pulses and monitors the reflected waves to learn the position and speed of the moth. Imagine that the moth is moving away from the bat, and that the bat approaches the moth with a greater speed. Which of the following statements is TRUE? Check all that apply. O The frequency of the reflected pulses received by the bat is lower than the frequency of the emitted pulses. O The wavelength of the reflected pulses received by the bat is shorter than the wavelength of the emitted pulses. O The frequency of the reflected pulses received by the bat is greater than the frequency of the emitted pulses. O The time delay between when a pulse is emitted by the bat and when the reflected pulse is received by the bat encodes the velocity of the moth. O The frequency of the reflected pulses received by the bat encodes the distance from the bat to the moth.A compression at a constant pressure of 160 kPa is performed on 3 moles of an ideal monatomic gas. The compression reduces the volume of the gas from 0.2 m' to 0.12 m'. The ideal gas constant is R = 8.314 J/mol . K. The work done by the gas is closest to: O -13 kJ O 32 kJ O O kJ O 13 kJ O -32 kJAs you will nd, seeing "ice bath" in the description of a thermal process is sometimes an indicator of an isothermal process (insofar as it keeps the temperature of an ideal gas constant). However, this latter conclusion isn't always the case, so you need to evaluate the entire situation. 0f the following descriptions of thermal processes, which one is an isothermal one? Q A gas-lled cylinder with a moveable piston and thick, insulated walls that is at room temperature is placed in an ice bath and the piston pulled out. 0 A gaslled cylinder with a moveable piston and thin walls that is at room temperature is placed in an ice bath and the piston is pulled out while the gas and cylinder cool down to 0 C. O A gas-lled cylinder with a moveable piston and thin walls is at 0 and sitting in an ice bath, and the piston is pulled out. 0 A gas-lled cylinder with a moveable piston that is at 300C is placed in an ice bath so that all the ice and water are turned to steam. O A gas-lled cylinder with a moveable piston that is at room temperature is placed under a ame and heated to 300 C. There is an ice bath on the other side of the room. 0 A gas-lled cylinder with a moveable piston and thin walls that is at room temperature is placed in an ice bath and allowed to cool down to 0 C while the piston is held in place. The gure shows two different processes taking an ideal gas from state i to state f. p The work done on the gas in process A is: O greater than the work done in process B. 0 equal to the work done in process B. 0 less than the work done in process B. The figure shows the PV diagram of a heat engine. P2 Isotherm Stage 1 Stage 2 PI Stage 3 V V1 V1 During which stage or stages is heat added to the gas? O Stage 2 only O Stage 3 only O No heat is added to the gas. O Stages 1 and 2 O Stages 2 and 3A Carnot Engine operates between a hot reservoir temperature of 215 degrees C and a cold reservoir temperature of 20 degrees C. If the engine draws 1000 J from the hot reservoir per cycle, how much work will it do per cycle? 01000] O 900] O 400] 0100] O 600]