Which of the following expressions does not have the correct dimensions for calculating the time it...
Which of the following expressions does not have the correct dimensions for calculating the time it takes an object to fall to the ground? Force has dimensions of ? ⋅ ?/?2
a. volume/ (area x speed)
b. distance/ speed
c. √distance x mass / force (square root over the whole equation)
d. velocity / acceleration
e. area/acceleration The answer is E, but I do not understand how it is not B. Please show the dimensions for each. Thank you
Homework Answers
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Which of the following expressions does not have the correct
dimensions for calculating the time it...
Exercise 1 Obtain expressions for the dimensions of the following quantities using both (1) the absolute...
Exercise 1 Obtain expressions for the dimensions of the following quantities using both (1) the absolute dimensional system, and, (2) the gravitational dimensional system Here, x, x1, and x2 represent lengths , t is time, m is a constant mass, <a represents acceleration, g is a constant acceleration, and F represents force E is an unknown constant quantity drr2(t) dt C2 E mg 「x(t) dt Exercise 2 Given that F is a force. is a displacement. θ is an angle,...
An object of mass 700 kg is released from rest 1000 m above the ground and...
An object of mass 700 kg is released from rest 1000 m above the ground and allowed to fall under the influence of gravity. Assuming the force due to air resistance is proportional to the velocity of the object with proportionality constant b=50 N-sec/m, determine the equation of motion of the object. When will the object strike the ground? (Hint: Here the exponential term is too large to ignore. Use Newton's method to approximate the time t when the object...
please show work. Part C Find the dimensions [v] of speed. Express your answer as powers...
please show work.
Part C Find the dimensions [v] of speed. Express your answer as powers of length (/), mass (m), and time t View Available Hint(s) 11에 Submit There are three dimensions used in mechanics: length (), mass (m), and time (t). A combination of these three dimensions suffices to express any physical quantity, because when a new physical quantity is needed (e.g., velocity), it always obeys an equation that permits it to be expressed in terms of the...
Question 10 (1 point) Which list contains only vector quantities? a) displacement, velocity, density b) time,...
Question 10 (1 point) Which list contains only vector quantities? a) displacement, velocity, density b) time, velocity, acceleration c) acceleration, velocity, distance d) power, energy, time e) displacement, velocity, acceleration f) acceleration, force, distance g) mass, force, displacement Question 11 (1 point) Bob is in a helicopter, hovering over Tallula's house. He throws a bowling ball straight down with a speed of 6.81 m/s, hoping to make a hole in Tallula's roof. Unfortunately, he misses, and the ball lands in...
HYS19. Question 8/1 point) Which list contains only scalar quantities? O al mass, speed, volume b)...
HYS19. Question 8/1 point) Which list contains only scalar quantities? O al mass, speed, volume b) displacement, velocity, density Od distance, temperature, velocity Odl displacement, velocity, acceleration e) distance, speed, acceleration On mass, speed, force el distance, energy, force
NOTES: HI, PLEASE SOLVE BY USING ANALYTICAL METHOD WHICH IS RELATED TO FLUID MECHANICS(DRAG FORCE).TQ 25.19...
NOTES: HI, PLEASE SOLVE BY USING ANALYTICAL METHOD WHICH IS
RELATED TO FLUID MECHANICS(DRAG FORCE).TQ
25.19 Assuming that drag is proportional to the square of velocity, we can model the velocity of a falling object like a parachutist with the following differential equation: dv dt where v is velocity (m/s), 1 = time (s), g is the acceleration due to gravity (9.81 m/s), c = a second-order drag coefficient (kg/m). and m 90-kg object with a drag coefficient of 0.225...
Formula Sheet (Phvsire Which one of the following quantities can be determined from the slope of...
Formula Sheet (Phvsire Which one of the following quantities can be determined from the slope of a velocity versus time graph for an object in motion? 20. A) distance traveled B) position C) velocity D) displacement E) acceleration A projectile is fired at an angle of 35.0° above the horizontal with an initial speed of 55.0 m/s. How long does it take the projectile to reach the highest point in its tra 21. jectory? A) 2.4s B) 9.8 s C)...
What are the dimensions or units of A in the equatice below that will make the...
What are the dimensions or units of A in the equatice below that will make the equation unitically corect? Where" "has dimensions of LVIT'1 or units of (myts In which of the following cases does a car have a negative velocity and a positive acceleration? A car that is traveling in the O a.-x direction at a constant 20 m/s O b.-x direction decreasing in speed O c x direction increasing in speed O d. x direction increasing in speed...
QUESTION 3. (3a) Show that - 2mü xi – mū x (W x ) where F...
QUESTION 3. (3a) Show that - 2mü xi – mū x (W x ) where F is the total force acting on an object of mass m measured by an inertial observer and is the acceleration of the object measured in a frame rotating with angular velocity الها (3b) A bug crawls radially outward with constant speed v from the center of a turntable rotating with constant angular velocity w. Consider a coordinate system fixed to the turntable, in which...
A test model for a new type of braking system is designed to apply a braking...
A test model for a new type of braking system is designed to apply a braking force that decays following an exponential function. For an object moving in the (+) x direction (to the right), the force acts in the opposite direction. When the brakes are applied, the velocity change as a function of time in seconds can be approximated by . v=v(t) = V, e-At where Vo is a constant in [m/sec) and A is a constant in [1/sec)....
Exercise 1 Obtain expressions for the dimensions of the following quantities using both (1) the absolute dimensional system, and, (2) the gravitational dimensional system Here, x, x1, and x2 represent lengths , t is time, m is a constant mass, <a represents acceleration, g is a constant acceleration, and F represents force E is an unknown constant quantity drr2(t) dt C2 E mg 「x(t) dt Exercise 2 Given that F is a force. is a displacement. θ is an angle,...
An object of mass 700 kg is released from rest 1000 m above the ground and allowed to fall under the influence of gravity. Assuming the force due to air resistance is proportional to the velocity of the object with proportionality constant b=50 N-sec/m, determine the equation of motion of the object. When will the object strike the ground? (Hint: Here the exponential term is too large to ignore. Use Newton's method to approximate the time t when the object...
please show work.
Part C Find the dimensions [v] of speed. Express your answer as powers of length (/), mass (m), and time t View Available Hint(s) 11에 Submit There are three dimensions used in mechanics: length (), mass (m), and time (t). A combination of these three dimensions suffices to express any physical quantity, because when a new physical quantity is needed (e.g., velocity), it always obeys an equation that permits it to be expressed in terms of the...
Question 10 (1 point) Which list contains only vector quantities? a) displacement, velocity, density b) time, velocity, acceleration c) acceleration, velocity, distance d) power, energy, time e) displacement, velocity, acceleration f) acceleration, force, distance g) mass, force, displacement Question 11 (1 point) Bob is in a helicopter, hovering over Tallula's house. He throws a bowling ball straight down with a speed of 6.81 m/s, hoping to make a hole in Tallula's roof. Unfortunately, he misses, and the ball lands in...
HYS19. Question 8/1 point) Which list contains only scalar quantities? O al mass, speed, volume b) displacement, velocity, density Od distance, temperature, velocity Odl displacement, velocity, acceleration e) distance, speed, acceleration On mass, speed, force el distance, energy, force
NOTES: HI, PLEASE SOLVE BY USING ANALYTICAL METHOD WHICH IS
RELATED TO FLUID MECHANICS(DRAG FORCE).TQ
25.19 Assuming that drag is proportional to the square of velocity, we can model the velocity of a falling object like a parachutist with the following differential equation: dv dt where v is velocity (m/s), 1 = time (s), g is the acceleration due to gravity (9.81 m/s), c = a second-order drag coefficient (kg/m). and m 90-kg object with a drag coefficient of 0.225...
Formula Sheet (Phvsire Which one of the following quantities can be determined from the slope of a velocity versus time graph for an object in motion? 20. A) distance traveled B) position C) velocity D) displacement E) acceleration A projectile is fired at an angle of 35.0° above the horizontal with an initial speed of 55.0 m/s. How long does it take the projectile to reach the highest point in its tra 21. jectory? A) 2.4s B) 9.8 s C)...
What are the dimensions or units of A in the equatice below that will make the equation unitically corect? Where" "has dimensions of LVIT'1 or units of (myts In which of the following cases does a car have a negative velocity and a positive acceleration? A car that is traveling in the O a.-x direction at a constant 20 m/s O b.-x direction decreasing in speed O c x direction increasing in speed O d. x direction increasing in speed...
QUESTION 3. (3a) Show that - 2mü xi – mū x (W x ) where F is the total force acting on an object of mass m measured by an inertial observer and is the acceleration of the object measured in a frame rotating with angular velocity الها (3b) A bug crawls radially outward with constant speed v from the center of a turntable rotating with constant angular velocity w. Consider a coordinate system fixed to the turntable, in which...
A test model for a new type of braking system is designed to apply a braking force that decays following an exponential function. For an object moving in the (+) x direction (to the right), the force acts in the opposite direction. When the brakes are applied, the velocity change as a function of time in seconds can be approximated by . v=v(t) = V, e-At where Vo is a constant in [m/sec) and A is a constant in [1/sec)....
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