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![[6] given m= 35 kg v = 24 m/s to find kinetic enexgy k = ? using formula KEAMV? K: !(35)(24 k = 10080) (Answer) K: 10.08 KJ 7](http://img.homeworklib.com/questions/f9f46410-f951-11ea-8f94-a3837311f6ef.png?x-oss-process=image/resize,w_560)
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Question 6 4 pts A 35 kg mass travels at a constant speed of 24 m/s....
1o) A typical blower motor draws a current of 18.o A on the highest speed setting (Speed 4), when...
1o) A typical blower motor draws a current of 18.o A on the highest speed setting (Speed 4), when it is connected directly across the 12.0 V battery. Show the work that tells you that the motor's resistance equals 0.667 Ω. Switched 12V Blower Motor 180 mD u) (6 points] Complete this table of total resistance (motor plus resistors) in the circuit, in ohms, and current through the motor, in amperes, for each of the speed settings. Be careful -...
Question 3 An object, with mass 79 kg and speed 24 m/s relative to an observer,...
Question 3 An object, with mass 79 kg and speed 24 m/s relative to an observer, explodes into two pieces, one 4 times as massive as the other; the explosion takes place in deep space. The less massive piece stops relative to the observer. How much kinetic energy is added to the system, during the explosion, as measured in the observer's reference frame? Number Units
Th figure below shows a mass m=1.0 kg which is initially moving with speed v=7.2 m/s...
Th figure below shows a mass m=1.0 kg which is initially moving
with speed v=7.2 m/s at the top of a frictionless hill of height
h=4.9 m. It slides down the hill until it encounters a flat section
with unknown coefficient of kinetic friction µk. If the object
travels a distance D=11.1 m before reaching a speed of v/2, what is
the coefficient of kinetic friction µk? (use picture, but first
question)
Th figure below shows a mass m=1.0 kg...
Question 1 1 pts When an RLC series circuit is in resonance, its impedance is: O...
Question 1 1 pts When an RLC series circuit is in resonance, its impedance is: O equal to its resistance. O at maximum. O negative. O zero. Question 2 1 pts Consider an AC series circuit containing a coil, capacitor and resistance. Tripling the frequency will change the inductive reactance by what factor? O 1 3 O 1/3 O 1.73 Question 3 1 pts The power factor in an AC series circuit is equal to which of the following ratios?...
Question 25 1 pts A 3kg object traveling at 4 m/s is pushed by a net...
Question 25 1 pts A 3kg object traveling at 4 m/s is pushed by a net force of 5 N. The speed increases to 6 m/s. Find the distance the object travels. O 0.4m O 1.2 m 4.8m 06m O None of the above Question 26 1 pts A 40.0 N crate is pulled up a 5.0 m inclined plane. The angle of inclination of the plane to horizontal is 37º. If there is a constant force of friction of...
6 Mass 10 (x 1025 kg ) 5.5 5 4.5 Velocity 5 (x 10 m/s) 4...
6 Mass 10 (x 1025 kg ) 5.5 5 4.5 Velocity 5 (x 10 m/s) 4 3.5 3 Charge 0.9 (x 10-16 C) 2.5 2 (T) 1.5 Magnetic Field Strength 1 1 0.5 (mm) -0.5 -1 -1.5 Start Reset -2 -2.5 -3 Clear Trace -3.5 -4 -4.5 -5 1. [3pts] Set the following values: 1T, 10-25 kg, 5x109 m/s , and 0.9 x 10-16C. Shoot the particle and measure the radius of deflection. You can measure the radius by observing...
Question 21 4 pts A0.12-kg ball is moving at - 6 m/s when it is hit...
Question 21 4 pts A0.12-kg ball is moving at - 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the change in the magnitude of the momentum of the ball? 2.4 kg.m/s O 0.42 kg.m/s 0.39 kg.m/s 1.3 kg.m/s
10 pts Question 6 6) A mass of 8 kg is moving at 20 m/s in...
10 pts Question 6 6) A mass of 8 kg is moving at 20 m/s in the +x direction and collides in a perfect elastic collision with a 3 kg mass moving in the +x direction at 6 m/s. If the masses are in contact for 0.15 seconds, what is the average force on the 8 kg mass in Newtons? Include a negative sign if in the negative x direction.
in the circuit below, the switch S Question 4 (4.0 pts) A series motor has an...
in the circuit below, the switch S
Question 4 (4.0 pts) A series motor has an armature resistance 0.50? and a series-field resistance R0.202. It is connected to a DC voltage U 400 V. Assume a brush drop U, 3.0V and that the flux is proportional to the current. a. The speed is n 600r/min when the line current is , 40A i. Find the counter electromotive force E ii. Assume that there is no mechanical loss, find the power...
Question 4 4 pts A small ball is thrown horizontally with a speed of 5 m/s...
Question 4 4 pts A small ball is thrown horizontally with a speed of 5 m/s from the edge of a cliff. It strikes ground at a point 10m horizontally from the cliff edge. The height of the cliff (in m) is O 10 19.6 39.2 9.8 O 4.9
1o) A typical blower motor draws a current of 18.o A on the highest speed setting (Speed 4), when it is connected directly across the 12.0 V battery. Show the work that tells you that the motor's resistance equals 0.667 Ω. Switched 12V Blower Motor 180 mD u) (6 points] Complete this table of total resistance (motor plus resistors) in the circuit, in ohms, and current through the motor, in amperes, for each of the speed settings. Be careful -...
Question 3 An object, with mass 79 kg and speed 24 m/s relative to an observer, explodes into two pieces, one 4 times as massive as the other; the explosion takes place in deep space. The less massive piece stops relative to the observer. How much kinetic energy is added to the system, during the explosion, as measured in the observer's reference frame? Number Units
Th figure below shows a mass m=1.0 kg which is initially moving
with speed v=7.2 m/s at the top of a frictionless hill of height
h=4.9 m. It slides down the hill until it encounters a flat section
with unknown coefficient of kinetic friction µk. If the object
travels a distance D=11.1 m before reaching a speed of v/2, what is
the coefficient of kinetic friction µk? (use picture, but first
question)
Th figure below shows a mass m=1.0 kg...
Question 1 1 pts When an RLC series circuit is in resonance, its impedance is: O equal to its resistance. O at maximum. O negative. O zero. Question 2 1 pts Consider an AC series circuit containing a coil, capacitor and resistance. Tripling the frequency will change the inductive reactance by what factor? O 1 3 O 1/3 O 1.73 Question 3 1 pts The power factor in an AC series circuit is equal to which of the following ratios?...
Question 25 1 pts A 3kg object traveling at 4 m/s is pushed by a net force of 5 N. The speed increases to 6 m/s. Find the distance the object travels. O 0.4m O 1.2 m 4.8m 06m O None of the above Question 26 1 pts A 40.0 N crate is pulled up a 5.0 m inclined plane. The angle of inclination of the plane to horizontal is 37º. If there is a constant force of friction of...
6 Mass 10 (x 1025 kg ) 5.5 5 4.5 Velocity 5 (x 10 m/s) 4 3.5 3 Charge 0.9 (x 10-16 C) 2.5 2 (T) 1.5 Magnetic Field Strength 1 1 0.5 (mm) -0.5 -1 -1.5 Start Reset -2 -2.5 -3 Clear Trace -3.5 -4 -4.5 -5 1. [3pts] Set the following values: 1T, 10-25 kg, 5x109 m/s , and 0.9 x 10-16C. Shoot the particle and measure the radius of deflection. You can measure the radius by observing...
Question 21 4 pts A0.12-kg ball is moving at - 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the change in the magnitude of the momentum of the ball? 2.4 kg.m/s O 0.42 kg.m/s 0.39 kg.m/s 1.3 kg.m/s
10 pts Question 6 6) A mass of 8 kg is moving at 20 m/s in the +x direction and collides in a perfect elastic collision with a 3 kg mass moving in the +x direction at 6 m/s. If the masses are in contact for 0.15 seconds, what is the average force on the 8 kg mass in Newtons? Include a negative sign if in the negative x direction.
in the circuit below, the switch S
Question 4 (4.0 pts) A series motor has an armature resistance 0.50? and a series-field resistance R0.202. It is connected to a DC voltage U 400 V. Assume a brush drop U, 3.0V and that the flux is proportional to the current. a. The speed is n 600r/min when the line current is , 40A i. Find the counter electromotive force E ii. Assume that there is no mechanical loss, find the power...
Question 4 4 pts A small ball is thrown horizontally with a speed of 5 m/s from the edge of a cliff. It strikes ground at a point 10m horizontally from the cliff edge. The height of the cliff (in m) is O 10 19.6 39.2 9.8 O 4.9
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