Homework Answers
1)option (D) is correct.
Body is said to be in equilibrium if net force acting on it will be zero .consequently their acceleration also zero.
2)option (B) is correct. Newtons 3rd law.
3)option (A) is correct.
Normal force decrease because pseudo force starts supporting it.
4)option (C) is correct.
The acceleration will be only centripetal acceleration .
Add Answer to:
1) An object is in static equilibrium. Which statement(s) about this object must always be true?...
A car going 25 m/s hits a stationary truck. Which of the statements are true? The...
A car going 25 m/s hits a stationary truck. Which of the statements are true? The magnitude of the force on the car is equal to the magnitude of the force on the truck The magnitude of the force on the car is greater than the magnitude of the force on the truck The magnitude of the force on the car is less than the magnitude of the force on the truck The car experiences an acceleration The truck experiences...
7) A 21-ton (42,000-lb) truck collides with an 2300-lb car and causes a lot of damage...
7) A 21-ton (42,000-lb) truck collides with an 2300-lb car and causes a lot of damage to the car. During the collision A) the force on the truck due to the collision is greater than the force on the car, and the truck experiences greater acceleration. B) the force on the truck due to the collision is greater than the force on the car, and the car experiences greater acceleration. C) the forces on the truck and car are equal,...
11. An airplane flies to east at 100 m/s, while a bird flies to west and...
11. An airplane flies to east at 100 m/s, while a bird flies to west and collides with the airplane. The velocity of the bird is 4 m/s. In the reference frame of the plane, what is the value of the speed of the bird? A) 4 m/s B)100 m/s C)104m/s D) 96 m/s E) 52 m/s 12. When the instantaneous velocity of a car is zero, A) the acceleration should be zero. B) the acceleration should be a constant....
An object is moving forward with a constant velocity. Which statement about this object MUST be...
An object is moving forward with a constant velocity. Which statement about this object MUST be true? A. No forces are acting on the object. B. The net force on the object is in the forward direction. C. The acceleration of the object is in the forward direction. D. The net force on the object is zero.
Question 1. The validity of the four kinematic equations depends on a basic assumption made about...
Question 1. The validity of the four kinematic equations depends on a basic assumption made about the object being described which is: Question 1 options: A) the object must be on the earth, otherwise, we must use “graviton physics”. B) the object has a constant acceleration, otherwise, we must use more complex equations. C) the object has a mass that is greater than 10-10 kg, otherwise, we must use “particle physics”. D) the object has a velocity greater than zero,...
8) A car is pushing a large truck, such that both accelerate. Which is true? A)...
8) A car is pushing a large truck, such that both accelerate. Which is true? A) The contact force the car exerts on the truck is larger than the contact force the truck exerts on the car. B) The contact force the truck exerts on the car is larger than the contact force the car exerts on the truck. C) The non-zero contact force of the truck on the car is equal to the contact force of the car on...
An object of mass m = 0.750 kg is suspended from the ceiling of an accelerating...
An object of mass m = 0.750 kg is suspended from the ceiling of an accelerating truck as in the figure below. Take a = 3.20 m/s. (a) Find the angle 8 (in degrees) that the string makes with the vertical. (b) Find the tension Tin N) in the string. What If? The truck returns to a constant velocity so that the mass hangs straight down inside the truck, whereby 9 = 0. Later, the truck carefully slows down. During...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
2) Rita is in an elevator that is moving at a constant velocity downward. If the...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
please clarify when you can and please use easy to read hand writting. always upvote, thanks!...
please clarify when you can and please use easy to read hand
writting. always upvote, thanks!
Assume that while ascending, an elevator has the same magnitude of acceleration "a" during starting (accelerating) and stopping (decelerating). A person stands on a scale in that elevator, and hence pushes downwards on the scale. The scale also reacts with an upward normal force. The maximum and minimum scale readings are Nace = 600 N and N dec = 400 N, respectively. acceleration of...
A car going 25 m/s hits a stationary truck. Which of the statements are true? The magnitude of the force on the car is equal to the magnitude of the force on the truck The magnitude of the force on the car is greater than the magnitude of the force on the truck The magnitude of the force on the car is less than the magnitude of the force on the truck The car experiences an acceleration The truck experiences...
7) A 21-ton (42,000-lb) truck collides with an 2300-lb car and causes a lot of damage to the car. During the collision A) the force on the truck due to the collision is greater than the force on the car, and the truck experiences greater acceleration. B) the force on the truck due to the collision is greater than the force on the car, and the car experiences greater acceleration. C) the forces on the truck and car are equal,...
11. An airplane flies to east at 100 m/s, while a bird flies to west and collides with the airplane. The velocity of the bird is 4 m/s. In the reference frame of the plane, what is the value of the speed of the bird? A) 4 m/s B)100 m/s C)104m/s D) 96 m/s E) 52 m/s 12. When the instantaneous velocity of a car is zero, A) the acceleration should be zero. B) the acceleration should be a constant....
8) A car is pushing a large truck, such that both accelerate. Which is true? A) The contact force the car exerts on the truck is larger than the contact force the truck exerts on the car. B) The contact force the truck exerts on the car is larger than the contact force the car exerts on the truck. C) The non-zero contact force of the truck on the car is equal to the contact force of the car on...
An object of mass m = 0.750 kg is suspended from the ceiling of an accelerating truck as in the figure below. Take a = 3.20 m/s. (a) Find the angle 8 (in degrees) that the string makes with the vertical. (b) Find the tension Tin N) in the string. What If? The truck returns to a constant velocity so that the mass hangs straight down inside the truck, whereby 9 = 0. Later, the truck carefully slows down. During...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
please clarify when you can and please use easy to read hand
writting. always upvote, thanks!
Assume that while ascending, an elevator has the same magnitude of acceleration "a" during starting (accelerating) and stopping (decelerating). A person stands on a scale in that elevator, and hence pushes downwards on the scale. The scale also reacts with an upward normal force. The maximum and minimum scale readings are Nace = 600 N and N dec = 400 N, respectively. acceleration of...
Most questions answered within 3 hours.
-
1.How large must the coefficient of static friction be between
the tires and the road if...
asked 8 minutes ago -
What is the time complexity (Big-O) of the following code?
class Main
{
// Recursive...
asked 7 minutes ago -
Economists look at any situation in terms of its component
parts: the people making decisions, the...
asked 13 minutes ago -
What is a population?
Select one:
a. All of the individual organisms belonging to the same...
asked 17 minutes ago -
You have a yeast cell culture with a concentration of 5x10^4
cells/ml. If you dilute this...
asked 21 minutes ago -
In which direction the Reaction goes? Show detailed process.
SeO3 + 2ClO2. + 2H3O <---> Se...
asked 35 minutes ago -
Unexposed silver halides are removed from photographic film when
they react with sodium thiosulfate
(Na2S2O3, called...
asked 35 minutes ago -
A 0.3054 gram sample of the mineral chalcopyrite (CuFeS2)
yielded 0.6525 gram BaSO4 precipitate. What is...
asked 35 minutes ago -
An short-seller in Tesla is worried the latest management
earnings forecast is too aggressive and the...
asked 1 hour ago -
Question 3 (1 point)
Fill in the blank. Speed Car Rental company found that the tire...
asked 1 hour ago -
1. A copper wire is 26.61 cm long and weighs 1.265 g. The
density of copper...
asked 59 minutes ago -
Remember that a concept sketch consists of a sketch (or
series of sketches), labels, and complete...
asked 1 hour ago