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Physics 101 Mechanics
May 2023
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Physics 101 Mechanics Q&A Archive of May 27, 2023

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May 27 of 2023

Q3. What do you think happens to the velocity of the two toy cars as point of release increases? Q4. If momentum is a measure of how difficult it is to stop a moving object, which of the two cars had a greater momentum for the same point of release? Q5. How will it be possible for the two…

A 550-N physics student stands on a bathroom scale in an 850 kg (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 450 N. (a) Find the acceleration of the elevator?

Two identical particles shown in the figure collide at P and move apart at angle with different velocities. Calculate the magnitude of angle and velocity of particle

the technician approahes you for assistance and explain that, he forgot to measure the initial diameter of the specimen at the start of the compression test. however he explains that the material of the specimen has a yield strength of 420MPa and its measured diameter when loaded to the yield…

1.4. A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge \( 235 \mathrm{~m} \) below. If the plane is traveling horizontally with a speed of \( 69.4 \mathrm{~m} / \mathrm{s} \) how far in advance of the recipients (horizontal distance) must the goods be…

the technician approahes you for assistance and explain that, he forgot to measure the initial diameter of the specimen at the start of the compression test. however he explains that the material of the specimen has a yield strength of 420MPa and its measured diameter when loaded to the yield…

Three objects are connected on a table as shown. The coefficient rinetic friction between the block of mass \( m_{2} \) and the table is 0.3 he objects have masses of \( m_{1}=4.00 \mathrm{~kg}, m_{2}=1.00 \mathrm{~kg} \) and \( m_{3}=2 \). and the pulleys are frictionless. 2.4.1. Draw a…

2-2. A small, monochromatic light source, radiating at \( 500 \mathrm{~nm} \), is rated at \( 500 \mathrm{~W} \). (a) If only \( 2 \% \) of its total power is perceived by the eye as luminous power, what is its luminous flux output?

Q1. Two spheres are cut from a certain uniform rock. One has radius 10 cm. The mass of the other is half times smaller. Find its radius.

10. EKSU Academic building lot is \( 150 \mathrm{ft} \) by \( 200 \mathrm{ft} \). Determine the area of this lot in \( \mathrm{cm}^{2} \) and \( \mathrm{m}^{2} \).

8 QUESTION 7 The diagram below represents a cross-section of the peaks of Table Mountain (T) and Lions Head \( (\mathrm{L}) \) above sea level. Points \( \mathrm{M} \) and \( \mathrm{N} \) are directly below peaks \( \mathrm{L} \) and \( \mathrm{T} \) respectively such that MPN lies on the same…

The force needed to maintain a constant velocity of 0.4 m/s on air track is found to be 0.005 N. The area of the cart is 0.05 m². If the viscosity of air is 1.8 x 10-5 Pa s, the thickness Ay (in meter) of the air layer equals

The velocity of a particle traveling along a straight line is v=(3t^2-6t).if s=4t when t=0 determine the position of the particle when t=4s. what is the total distance traveled during the time interval t=0 to t=4s? also what's the acceleration when t=2s

A semicircular beam CD for aircraft fuselage is shown in Figure Q3. The beam is fixed at point C and is loaded by a vertical load of W = 200 N at point D, the centroid, of the beam’s cross section. Use Castigliano’s theorem, to determine the vertical deflection of point D. The curved beam is…

The body moves uniformly along an inclined plane. The body is affected by gravity 50H, friction force 30H and the reaction force of the support 40N. The coefficient of friction is equal to? A) 0,6 B)0,5 C)0 D)0,8 E)0,75

Obtain the expression for electric potential on the axis of a ring of radius a at a distance \( \mathrm{x} \) from the centre of the ring.

Problem 3: A hockey puck with mass \( 0.16 \mathrm{~kg} \) is at rest at the origin \( (x=0) \) on the horizontal, frictionless surface of the rink. At time \( t=0 \), a player applies a force of \( 0.25 \mathrm{~N} \) to the puck, parallel to the \( x \)-axis; she continues to apply this force…

Q25. An object covers a complete circle of radius \( 7 \mathrm{~m} \) in 40 s. What will be its distance travelled and displacement in 100 s?

A box of mass M = 10,000 grams rests on a 35° inclined plane with the horizontal. A string is used to keep the box in equilibrium. The string makes an angle of 25 ° with the inclined plane. The coefficient of static friction between the box and the inclined plane is 0.3. FIND THE TENSION ON…

(a) Draw a rough sketch of the front view with windows included. (b) Draw what you think the back view would look like (back eleraitit if you were told that there are no windows at the back. (c) Draw the rough elevation plan of the side indicated by SI. (d) Draw the rough elevation plan of the…

13. Through a very narrow gap of height \( h \), a thin plate of large extent is pulled at a velocity \( v \). On one side of the plate is oil of viscosity \( \mu_{1} \) and on the other side oil of viscosity \( \mu_{2} \). Calculate the position of the plate so that a) The shear force on the…

calculate the pressure occupied by 2 moles at 20degree celcius whose volume is 2.5m³

if a self-excited generator has lost all of It's residual magnetism, can it build up an output voltage?

Question In Example we saw earlier, suppose the point charge on the \( y \)-axis at \( y--0.30 \mathrm{~m} \) has negative charge \( -2.0 \mu \mathrm{C} \), and the other charges remain the same. Find the magnitude and direction of the net force on \( Q \). How does your answer differ from that…

(14 points) The position of a particle is given by the relation \( s=1.50 t^{3} \). \( 9 t^{2}+22.50 t+60 \), where \( s \) is expresed in meters and \( t \) in seconds. Determine the (a) time at which the velocity will be zero, (b) the position and distance travelled by the particl at that…

The position of a particle is given by the relation s = 1.50t^3-9t^2 + 22.50t +60, where s is expresed in meters and t in seconds. Determine the (a) time at which the velocity will be zero, (b) the position and distance travelled by the particle at that time, (c) the acceleration of the…

A ball is thrown vertically upward. Two seconds later, another ball is thrown upward with a velocity of 13.50 m/s. at what position above the ground they will meet?

The motion of a particle is given by the relation s = 3t³ - 9t² + 19t-21, where s is expressed in meters and t in seconds. Determine the position, velocity and acceleration when t = 5 s. Draw the motion curves (s -t curve, v-t curve and a –t curve)

The radius of earth is 6.4 ×10^2km. find the surface area of the earth in square meters

anlobst ts \( s+r=a t+3= \) Laks itler lase is

A low loss fiber has average loss of 3 ( mathrm{dB} / mathrm{km} ) at ( 900 mathrm{~nm} ). Compute the length over which - a) Power decreases by 50 ( % ) b) Power decreases by ( 75 % ).When mean optical power launched into an ( 8 mathrm{~km} ) length of fiber is ( 12 mu mathrm{W} ), the mean…

A Particle moving in the xy Plane undergoes a displacement Given bi \( \Delta r=(2 i+3 j) m \) and a Constant force \( f=(5 i+2 j) \sqrt{ } \operatorname{act} \) on the Partide. Calculate the magnitade of a force, displacement and work done yy force on the parficle

An electric commuter vehicle uses a 24-hp electric motor and is to have a photovoltaic array onthe roof to charge the batteries both while moving and parked. The average solar flux is 650Wem/m2. The commute is one hour each way and the vehicle is parked for 8 hours. Thus, for eachhour of…

\( 2.10 \times \frac{360}{2 \pi} \) \( 7.20 \times \frac{360}{2 \pi} \) Find \( x \) and \( y \) component of \( 25 \mathrm{~m} \) displacement at an angle of 210

three resisto. of resistanee in paralcel aeross a battay having a Noltage \( 12 \mathrm{~V} \) Determine the effective resistanee

three resisto of resistanee \( 2.2 \Omega, 4.7 \Omega \) and 6.8 \( \Omega \) are connected in paralcel aeross a battery having a Noltage \( 12 \mathrm{v} \) Determire the effective resistanee

Directions: You need to measure the dimension of your table in your house using the available tools you have. Apply the 2 measuring system: Metric System (use Centimeter), and English System (use Inch). a. What is the equivalent of the table's dimension in centimeter and in inch? b. Draw the…

It is known that the mass of air in the piston-cylinder can be considered as an internal ideal gas model executing a Carnot cycle power is 1.5 kg having a maximum temperature of 800 K and minimum temperature 300 K. Heat transfer to air during isothermal expansion 60 kJ. The volume at the end of…

Diketahui massa udara pada silinder-piston yang bisa ditinjau sebagai model gas ideal dalam mengeksekusi siklus daya Carnot adalah 1,5 kg memiliki temperatur maksimum 800 K dan temperatur minimum 300 K. Perpindahan kalor ke udara selama ekspansi isotermal 60 kJ. Volume pada akhir ekspansi…

please answer.

A ball is held 50 cm in front of a plane mirror. The distance between the ball and its image is: A. 100 cm B. 50 cm C. 0 cm D. 200 cm.

a golf was hit and projected at an angle of 60 if the initial velocity of the ball reached 50 m/s

'Thankyouuuu A golf ball was hit and projected atan angle of 60 ? wilh the horizontal If the Initial velocity of the ball was \( 50 \mathrm{mls} \) (neglect air frction) calculale the Time of the golf ball was in the air Honzontal distance the ball travelled Maximum height the ball reached'

EJEMPLO Calcular el volumen de una esfera de \( 14 \mathrm{~cm} \) de diámetro. NOTA: el diámetro de una circunferencia es la medida de un extremo al otro extremo de la circunferencia, dicho de otra manera, el diámetro \( =2 r \) (donde \( r \) es el radio) o el \( r= \) diámetro \( \div 2 \)

PROBLEM SOLVING ON UNIFORM ACCELERATED MOTION 1. What is the smallest distance needed for an airplane touching the runway with a velocity \( 30 \mathrm{~m} / \mathrm{s} \) and an acceleration of \( -10 \mathrm{~m} / \mathrm{s}^{2} \) to come to rest?

The voltage across the \( 16 \Omega \) resistor in the circuit in Fig. P2.22 is \( 80 \mathrm{~V} \), positive at the upper terminal. a) Find the power dissipated in each resistor. b) Find the power supplied by the \( 125 \mathrm{~V} \) ideal voltage source. c) Verify that the power supplied…

Ball 1, with a mass of 144 g and traveling at 10.8 m/s , collides head on with ball 2, which has a mass of 354 g and is initially at rest. Assume that ball 1 is traveling to the right before the collision and that the collision is one dimensional. What is the final velocity of ball 1 if…

A 550-N physics student stands on a bathroom scale in an 850 kg (including the student) elevator that is supported by a cable. As the elevator starts moving, the scale reads 450 N. (a) Find the acceleration of the elevator?

Q1. Two spheres are cut from a certain uniform rock. One has radius 10 cm. The mass of the other is half times smaller. Find its radius.

10. EKSU Academic building lot is \( 150 \mathrm{ft} \) by \( 200 \mathrm{ft} \). Determine the area of this lot in \( \mathrm{cm}^{2} \) and \( \mathrm{m}^{2} \).

8 QUESTION 7 The diagram below represents a cross-section of the peaks of Table Mountain (T) and Lions Head \( (\mathrm{L}) \) above sea level. Points \( \mathrm{M} \) and \( \mathrm{N} \) are directly below peaks \( \mathrm{L} \) and \( \mathrm{T} \) respectively such that MPN lies on the same…

A semicircular beam CD for aircraft fuselage is shown in Figure Q3. The beam is fixed at point C and is loaded by a vertical load of W = 200 N at point D, the centroid, of the beam’s cross section. Use Castigliano’s theorem, to determine the vertical deflection of point D. The curved beam is…

Diketahui massa udara pada silinder-piston yang bisa ditinjau sebagai model gas ideal dalam mengeksekusi siklus daya Carnot adalah 1,5 kg memiliki temperatur maksimum 800 K dan temperatur minimum 300 K. Perpindahan kalor ke udara selama ekspansi isotermal 60 kJ. Volume pada akhir ekspansi…

please answer.

A ball is held 50 cm in front of a plane mirror. The distance between the ball and its image is: A. 100 cm B. 50 cm C. 0 cm D. 200 cm.

Ball 1, with a mass of 144 g and traveling at 10.8 m/s , collides head on with ball 2, which has a mass of 354 g and is initially at rest. Assume that ball 1 is traveling to the right before the collision and that the collision is one dimensional. What is the final velocity of ball 1 if…