Ace - AI Tutor
Ask Our Educators
Textbooks
My Library
Flashcards
Scribe - AI Notes
Notes & Exams
Download App
catalina lindsey

catalina l.

Divider

Questions asked

BEST MATCH

Coercive power involves all of the following except: Group of answer choices The use of personal relationship to get one's way The removal of positive events The threat of punishment The administration of negative sanctions

View Answer
 divider
BEST MATCH

Q2. Transverse waves with a speed of \( 50.0 \mathrm{~m} / \mathrm{s} \) are to be produced in a taut string. A 5 mm length of string with a total mass of 60 g is used. What is the required tension? [3marks] Q3. A taut rope has a mass of 180 g and a length of 360 mm . Wrat power must be supplied to the rope in order to generate sinusoidal waves having an amplitude of 0.10 m and a wavelength of 0.5 m and traveling with a speed of \( 30.0 \mathrm{~m} / \mathrm{s} \) ? [4mariks] Q4.Calculate the length of a pipe that has a fundamental frequency of 240 Hz if the pipe is (a) closed at one end and (b) open at both ends. . \[ v=34 \frac{9}{9} \] [4marks] Q5.A boy standing some distance from the foot of a tall wall claps his hands and hears an echo 0.5 s later. If the speed of sound in air is \( 340 \mathrm{~km} / \) hour, how far is he from the wall? [3marks]

View Answer
 divider
BEST MATCH

Which of the following accurately describes how the innate and adaptive immune systems differ? a. the innate immune system produces antibodies and the adaptive does not b. the innate immune system is not very specific while the adaptive uses immunological memory c. the innate immune system protects against bacterial pathogens while the adaptive protects against viral ones d. the innate immune system responds first to an infection and the adaptive immune system only responds if the infection is a bacterial one

View Answer
 divider
BEST MATCH

Solve the system by graphing. y = x+1 y = -x+7 Graph each equation using the coordinate grid on the right. What is the solution to the system? Select the correct choice below and, if necessary, fill in the answer box

View Answer
 divider
BEST MATCH

Question 9 When blood sugar levels are low, alpha cells of the pancreas release glucagon, a peptide hormone that binds to glucagon receptors of the liver. These glucagon receptors are membrane-bound G-protein coupled receptors. This binding leads to a signal cascade that results in the cleavage of glucose monomers off stored glycogen in liver cells. The binding of glucagon and resulting response is an example of ________. ? homeostasis ? signal transduction ? quorum sensing ? proteolysis

View Answer
 divider
BEST MATCH

In a coffee cup calorimeter, a student mixes 85.25 mL of 0.690 M NaOH with 28.20 mL HBr, both originally at 17.0 C. The temperature rises to 29.0 C. (HBr is in excess.) According to the following reaction: NaOH(aq) + HBr (aq) ->NaBr (aq) + H2O(l) delta H = ? a) Calculate the heat energy change (q) b) Calculate the molar enthalpy change (Delta Hx) in kJ/mol of NaOH. c) Re-balance the reaction (if necessary) and re-write the chemical equation to show your molar enthalpy change term from part (b) in the context of this reaction. (Show your molar enthalpy change term as a reactant of product, whichever is appropriate.)

View Answer
 divider
BEST MATCH

Texts: help! 1) Motionless: It is a still day. You stand motionless, relative to earth. The car is in front of you. The car stands motionless, relative to earth. The car blares its horn which has a frequency of 68 Hz. The velocity of sound relative to air is 340 m/s. a) What is the wavelength that the driver and you experience? What is the frequency that you observe? It Moves: It is still a still day. You stand motionless, relative to earth. Right now, the car travels at 30 m/s, relative to earth, towards you. The car blares its horn which has a frequency of 68 Hz. The velocity of sound relative to air is 340 m/s. a) What is the wavelength that the driver and you experience? b) What is the frequency that you observe? One second later, the car passes you and is traveling at 30 m/s, relative to earth, away from you. The car is still blaring the same horn. What is the wavelength that the driver and you experience? d) What is the frequency that you observe? 3) I Move: It is still a still day. Right now, you move towards the car at 30 m/s, relative to earth. The car stands motionless, relative to earth. The car blares its horn which has a frequency of 68 Hz. The velocity of sound relative to air is 340 m/s. a) What is the wavelength that the driver and you experience? b) What is the frequency that you observe? One second later, you pass the car and are traveling at 30 m/s, relative to earth, away from the car. The car is still blaring the same horn. What is the wavelength that the driver and you experience? d) What is the frequency that you observe? 4) Motionless? It is a windy day. The wind travels from the car to you at a rate of 30 m/s, relative to the earth. You stand motionless, relative to earth. The car is in front of you. The car stands motionless, relative to earth. The car blares its horn which has a frequency of 68 Hz. The velocity of sound relative to air is 340 m/s. a) What is the wavelength that the driver and you experience? b) What is the frequency that you observe? (c) Why?

View Answer
 divider
BEST MATCH

c. If he does not fly to Montreal, then he is not in Canada. c. Determine the converse of the statement. Choose the correct answer below. A. If he is in Canada, then he flies to Montreal. B. If he flies to Montreal, then he is in Canada. C. If he is not in Canada, then he does not fly to Montreal. D. He flies to Montreal or he is not in Canada. Determine the inverse of the statement. Choose the correct answer below. A. If he is in Canada, then he flies to Montreal. B. If he flies to Montreal, then he is in Canada. C. He flies to Montreal or he is not in Canada. D. If he is not in Canada, then he does not fly to Montreal. Determine the contrapositive of the following statement. Choose the correct answer below. A. He flies to Montreal or he is not in Canada. B. If he flies to Montreal, then he is in Canada. C. If he is in Canada, then he flies to Montreal. D. If he is not in Canada, then he does not fly to Montreal.

View Answer
 divider
BEST MATCH

70. Design a 2nd-order active high-pass filter with a cutoff frequency of 1000 Hz and a pass-band gain of 12. Your filter is to be constructed from 1st-order active filter stages. Your design must use 3 operational amplifiers, 6 resistors and 2 capacitors. The two capacitors available have value 100 nF. Draw the resulting circuit diagram and label all component values.

View Answer
 divider
BEST MATCH

22 For the given cash flow, determine the simple payback period. * (2 Points) 4 #35,000/year R $20,000 MARR 12% years $17,000/year E $50,000 Project cash flow 4 years 6 years 8 years 7 years 5 years 2 years

View Answer
 divider