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Physics 101 Mechanics
November 2021
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Physics 101 Mechanics
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November 13, 2021
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November 13 of 2021
A laser beam is reflected off a mirror at an angle of 250 to the surface. Find the angle between the incident and reflected beams of light. A) 550 B) No option is correct C) 650 D) 1300 E) 1200
A bug flying at eye level is located 15 cm in front of a plane mirror. If you are 65 cm from the bug and looking into the mirror, find the distance between your eyes and the apparent position of the bug's image in the mirror. A) 100 cm B) 95 cm C) 75 cm D) 85 cm E) No option is correct
Imagine that a motorist is travelling so fast that the yellow light (585 nm wavelength) from a traffic signal appears green (555 nm wavelength). Find the velocity of the motorist, assuming the positive direction is defined as moving closer to the light. A) 1.64 x 107 m/s B) 2.64 x 107 m/s C)…
Which of the following is the correct order of electromagnetic radiation with increasing frequency? A) ? –Rays, Visible Light, IR Radiation, UV Radiation, X-Rays, Radio Waves B) No option is correct C) Radio Waves, UV Radiation, Visible Light, IR Radiation, X-Rays, ? –Rays D) Radio Waves,…
In a dentist's office an X-ray of a tooth is taken using X-rays that have a frequency of 6.30 x 1018 Hz. What is the wavelength in vacuum of these X-rays? Question 2 options: A) 2.76 x 10-11 m B) 4.76 x 10-11 m C) 3.76 x 10-11 m D) 5.76 x 10-11 m E) No option is correct.
Calculate the ratio of the critical angle of diamond to the critical angle of crown glass if both are surrounded by a vacuum. A) 0.475 B) 0.675 C) No option is correct D) 0.595 E) 0.585
How far (in cm) would light travel through diamond in 1.00 ?s? Question 24 options: A) 4.24 x104 cm B) 1.24 x104 cm C) No option is correct D) 3.24 x104 cm E) 2.24 x104 cm
The speed of light in a certain substance is only 92% of what it would be in a vacuum. What is the index of refraction of this substance? A) 3.1 B) 4.1 C) No option is correct D) 1.1 E) 2.1
A furnace is to be designed for a heat duty of 30 x 105 Btu/hr and efficiencyof 75%. The furnace is fired with gaseous fuel at a rate of 17 lb air / lb fuel(NHV = 17000 Btu/lb). The tube are arranged in two rows and are of 5 inOD., 40 ft length and 2x OD. Spacing, heat rate of 35000 Btu/hr…
A pendulum of mass m and length b is attached to a massless support initially at rest and then moving with vertically upward acceleration a a) Determine the Lagrangian b) Find the equation of motion of the pendulum
The temperature of a cup of water drops by 44oF when it is placed in a refrigerator for 45 minutes. How much did the temperature of the water change in K, oR and in oC.
A CALM buoy is moored in 30m water depth using a 6 line configuration. The CALM buoy is cylindrical with a diameter of 5m and mass 5 tonnes. Mooring chain of submerged weight 300 N/m is used throughout. The chain attachment points are on the outer edge of the CALM buoy and at its base. The…
WHAT IS THE AMOUNT OF KINETIC ENERGY THAT CONVERTS INTO POTENTIAL ENERGY
A 400 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 50 N/m. The block becomes attached to the spring and compresses the spring 20 cm before turning around. (Assume that friction is negligible.) (a) What is the maximum speed of the block? (b) What is the…
Can I get help with this question please? Male rams butt heads at high speeds in a ritual to assert their dominance. How can the force of this collision be minimized so as to avoid damage to their brains?
A horse in a pasture travels 55 m [W], then 25 m [S], then 67 m [S17°W], then 13 m [N33°E], and finally 24 m [N29°W]. Find the horse’s total displacement using the component method.
Two ice skaters stand together. They “push off” and travel directly away from each other, the boy with a velocity of 1.50 m/s. If the boy weighs 735 N and the girl, 490 N, what is the girl’s velocity after they push off? (Consider the ice to be frictionless.)
How many times louder would a 68.0 dB sound be compared to a 48.0 dB sound?
Four charges are arranged in a square with sides of length 2.5 cm. The two charges in the top right and bottom left corners are +3.0 x 10-6 C. The charges in the other two corners are -3.0 x 10-6 C. What is the net force exerted on the charge in the top right corner by the other three charges?
53. Two boxes of mass \( 30.0 \mathrm{~kg} \) and \( 10.0 \mathrm{~kg} \) are at rest side by side (Figure 5). You apply a force of \( 3.0 \times 10^{2} \mathrm{~N} \) on the first box for \( 5.0 \mathrm{~s} \), and they both slide across the floor. The larger box has a force of friction of \(…
A laser beam is reflected off a mirror at an angle of 250 to the surface. Find the angle between the incident and reflected beams of light. A) 550 B) No option is correct C) 650 D) 1300 E) 1200
A bug flying at eye level is located 15 cm in front of a plane mirror. If you are 65 cm from the bug and looking into the mirror, find the distance between your eyes and the apparent position of the bug's image in the mirror. A) 100 cm B) 95 cm C) 75 cm D) 85 cm E) No option is correct
Imagine that a motorist is travelling so fast that the yellow light (585 nm wavelength) from a traffic signal appears green (555 nm wavelength). Find the velocity of the motorist, assuming the positive direction is defined as moving closer to the light. A) 1.64 x 107 m/s B) 2.64 x 107 m/s C)…
Which of the following is the correct order of electromagnetic radiation with increasing frequency? A) ? –Rays, Visible Light, IR Radiation, UV Radiation, X-Rays, Radio Waves B) No option is correct C) Radio Waves, UV Radiation, Visible Light, IR Radiation, X-Rays, ? –Rays D) Radio Waves,…
In a dentist's office an X-ray of a tooth is taken using X-rays that have a frequency of 6.30 x 1018 Hz. What is the wavelength in vacuum of these X-rays? Question 2 options: A) 2.76 x 10-11 m B) 4.76 x 10-11 m C) 3.76 x 10-11 m D) 5.76 x 10-11 m E) No option is correct.
Calculate the ratio of the critical angle of diamond to the critical angle of crown glass if both are surrounded by a vacuum. A) 0.475 B) 0.675 C) No option is correct D) 0.595 E) 0.585
How far (in cm) would light travel through diamond in 1.00 ?s? Question 24 options: A) 4.24 x104 cm B) 1.24 x104 cm C) No option is correct D) 3.24 x104 cm E) 2.24 x104 cm
The speed of light in a certain substance is only 92% of what it would be in a vacuum. What is the index of refraction of this substance? A) 3.1 B) 4.1 C) No option is correct D) 1.1 E) 2.1
A pendulum of mass m and length b is attached to a massless support initially at rest and then moving with vertically upward acceleration a a) Determine the Lagrangian b) Find the equation of motion of the pendulum
The temperature of a cup of water drops by 44oF when it is placed in a refrigerator for 45 minutes. How much did the temperature of the water change in K, oR and in oC.
WHAT IS THE AMOUNT OF KINETIC ENERGY THAT CONVERTS INTO POTENTIAL ENERGY
A 400 g block is dropped onto a relaxed vertical spring that has a spring constant of k = 50 N/m. The block becomes attached to the spring and compresses the spring 20 cm before turning around. (Assume that friction is negligible.) (a) What is the maximum speed of the block? (b) What is the…
Can I get help with this question please? Male rams butt heads at high speeds in a ritual to assert their dominance. How can the force of this collision be minimized so as to avoid damage to their brains?
How many times louder would a 68.0 dB sound be compared to a 48.0 dB sound?
Four charges are arranged in a square with sides of length 2.5 cm. The two charges in the top right and bottom left corners are +3.0 x 10-6 C. The charges in the other two corners are -3.0 x 10-6 C. What is the net force exerted on the charge in the top right corner by the other three charges?
53. Two boxes of mass \( 30.0 \mathrm{~kg} \) and \( 10.0 \mathrm{~kg} \) are at rest side by side (Figure 5). You apply a force of \( 3.0 \times 10^{2} \mathrm{~N} \) on the first box for \( 5.0 \mathrm{~s} \), and they both slide across the floor. The larger box has a force of friction of \(…