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Question 1 Tallula is sitting in her truck

Physics

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Question 1

Tallula is sitting in her truck. She is stopped at a red light. When the light turns green, she accelerates to a speed of 6.07 m/s over a distance of 80.3m. The truck has a mass of 2.745 kg. Determine the magnitude of Tallula's average acceleration during this time. Your answer should be in m/s2.

Answer to 5 decimal places_ Do NOT enter units.

Use and carry all digits in your calculations.

Your Answer.    

 

Question 2

Jayden places an object at 26.54 cm from a converging mirror which produces real image alive 19.73 cm from the mirror. Now Jayden moves the object to a new position 42.62 cm from the mirror, where will the new image be located as measured from the mirror in cm?

 Answer to five decimal places. Do NOT enter units.

Your Answer

Answer

Question 3 (1 point)

What is the energy in electron volts of an electron in the third orbit of a hydrogen atom?

•∞

•1.51111 eV

•-13.6 eV            

•-1.51111 eV

•13.6 eV

 

 

 Question 4 (I point)

Bob loses a bowling game to Tallula. He is so angry, he throws one of his shoes- the shoe slides across the floor. The shoe has a mass of 0.350 kg. The coefficient of kinetic friction between the shoe and the floor is 0.559. The floor exerts a force upward on the shoe of 3.43 N. While it is sliding across the floor, what is the magnitude of the shoe's acceleration in m/s2? Your answer should be a positive number.

Answer to five decimal places. Do NOT enter units. Use and carry ALL digits in your calculations.

Your Answer:

Question 5

Bob uses a cannon to fire a watermelon straight up from ground level. The speed of the watermelon when it leaves the cannon is 30.0 m/s. The mass of the watermelon a 7.90 kg. Calculate the time the watermelon is in the air in seconds.

Answer to five decimal places. Do NOT enter units. Use and carry ALL digits in your calculations.

Your Answer:

 

Question 6 (1 Point)

A photoelectric experiment was used to determine the cutoff wavelength for aluminium. The metal was illuminated and no current flows was observed at the stopping potential. What is the cutoff wavelength in nanometers for aluminium?

Metal#	Metal	(ev)
1	Ag	4.73
2	Al	4.08
3	Cu	4.70
4	Fe	4.50
5	Na	2.46
6	Pb	4.14
7	Pt	6.35
8	Zn	4.31

 

 287.85826 nm

304.09000 nm

262.30173

195.38381

Not enough information provided

 

Question 7 (1 point)

 If the 3^rd order fringe in Young’s double-slit experiment occurs at an angle of 53.5•, what is the relationship between the wavelength ? and the distance between the slits d?

 d= 5.01987

 d= 1.79288                        

 d= 7.52353

 d= 3.73201

d= 1.19625

d= 5.04352

Question 8 (1 point)

Bob is pulling his little red wagon down the street. The street pushes up on the with a force of 107.80 N. Bob is pulling the wagon with a horizontal force of 127.96 N west. The force of friction on the wagon is 121.97 N East. The mass of is 11.0 kg. What is the magnitude of the wagon's acceleration in m/s2?

Answer to five decimal places. Do NOT enter unit.

Use and carry all digits in your calculations.  

Answer:

Question 9

 Tallula has a very large office and a very heavy desk. She asks Bob to move her desk from one side of the office to the other side. Bob ties a rope to the desk and pulls the desk horizontally. The desk does not begin to move until he applies a horizontal force of 323.1 N. Once it is in motion, a horizontal force of 202.8 N is needed to give the desk a constant speed. The desk has a mass of 48.2 kg. What is the coefficient of static friction between the desk and the floor?

Answer to five decimal places. Do NOT enter unit.

Use and carry all digits in your calculations.  

Answer:

 

Question 10

Unpolarised monochromatic light passes through a single Polaroid filter, oriented horizontally.  It then encounters a second filter that is oriented horizontally. Which of statements is true of the resulting light?

 

 

The emerging light is unpolarised

The light is entirely blocked

The emerging light polarized horizontally

The emerging light is polarized vertically

 

Question 11

Bob is fishing on his new 5.0 m long boat. He notices that ripples having a wavelength of 13.02cm pass the bow (front) of his anchored boat. If it takes a ripple 56.0 seconds to reach the shore from the bow of the boat and the boat is 12.6 meters from the shore.

How many ripples per second pass the bow of his boat?

Answer to five decimal places. Do NOT enter unit.

Use and carry all digits in your calculations.  

Answer:

Question 12

Tallula is having fun at a park close to her house. She is sliding down a slide which is 4.89m high and makes an angle of elevation of ø-41.0° with the ground. If Tallula has a mass of 38.49kg what will be her speed when she is at the bottom of the slide? Assume there are no energy losses due to friction.

Answer to five decimal places. Do NOT enter unit.

Use and carry all digits in your calculations.  

Answer:

 

Question 13

It’s a sunny day and Bob is kiting a mountain which is 202.03 m high. He has a mass of 64.4 kg • and it takes him 4.41 hours to reach the top of the mountain. What is Bob's power in watts?

Answer to five decimal places. Do NOT enter unit.

Use and carry all digits in your calculations.  

Answer:

 

Question 14

Magnetic resonance Imaging (MRI) is a diagnosis tool used in medicine to detect nerve damage. Sheri & Dan were in their cottage isolating. While Dan was cutting the grass with the electric lawn mower, he tripped with the electric cord and twisted his ankle. The doctor believes he has suffered nerve damage and recommends MRI testing. Dan's height is 1.68 m and his mass is 60.0 kg. If the wavelength of the, radiation use in MRI is 26.1 cm in the air prior to entering Dan's body.

What is the energy in Joules of one MOLE of photons?

 Avogadro’s number: 6.022 x 10^23

Answer to five decimal places. Do NOT enter unit.

Use and carry all digits in your calculations.  

Answer:

Question 15

Tallula is in a hurry and wants to drive to school. She realizes that she forgot the car key. So she asks Bob to throw the key from the window on the fifth floor. Bob throws the key at a height 71.7 m from the ground at an angle of elevation of 20.7° with a velocity of 6.89 m/s. How high is the key above the ground 3.14 s after it is thrown? Give your answer in metres.

Answer to five decimal places. Da NOT enter units.

Use and carry -ALL digits in your calculations.

Your Answer:

Question 16 (1 point)

Lucy tries to use a lens made up of plastic rather than the crown glass and see how the focal length varies. She decides to take a biconvex lens of plastic with an outer radius of curvature 30.99 cm and an inner radius of curvature of 40.64 cm. What wild focal length in meters of the lens made from plastic? (n = 1.50)

Answer to FIVE decimal places. Do NOT enter units.

Your Answer:

 

Question 17

Tallula is feeling lonely and neglected. Bob never spends any time with her because he is always out bowling. Tallula decides to hide Bob’s bowling ball in the attic. She carries the 5429.61-g ball up into the attic and places it in an old trunk full of photographs of happier times. If the attic is 310.20 cm higher than the main floor, how much work in joules did Tallula do on the bowling ball?

Answer to FIVE decimal places. Do NOT enter units. Use and carry ALL digits in your calculations.

 

Your Answer.

 

Question 18 (1 point)

Tallula is rolling a 4.96-kg bowling ball. The ball is initially stationary. Her hand is in contact with the ball for 0.293 s and she does 11.89 J of work on the ball. Determine the speed of the ball in metres/second when it leaves her hand. Ignore the effects of friction.

Answer to FIVE decimal places. Do NOT enter units. Use and carry ALL digits in your calculations.

Your Answer:

 

Question 19 (1 point)

Tallula has a very large office and a very large desk because she is a Very important person. She wants slide her desk to the other side of the office, so she calls Bob. Bob pushes on the desk in a direction parallel to the floor, causing t desk to accelerate at a rate of 0.164 m/s2. The coefficient of kinetic friction between the desk and the floor is 0.499. The mass of the desk is 47.6kg. Determine the magnitude of the force that Bob is exerting in newtons.

Answer to FIVE decimal places. Do NOT enter units. Use and carry ALL digits in your calculations.

Your Answer:

 

 

 

Question 20 (1 point)

A 0.00381 L solution of ibuprofen was made by dissolving 2,524.85 mg ibuprofen in methanol. The observed rotation of the sample using a sodium D line (549 nm) at 25° C was found to be +15.32°. What is the length of the sample tube (I) in decimetre if it has a rotation of +11.46° at. 549 nm and 25° C?

Answer to FIVE decimal places.

Use and carry ALL digits in your calculations.

Your Answer: