Homework Answers
Add Answer to:
A 56g rock was dropped from a height of 12 m. A) What is the force...
You dropped a 56 g tennis ball from a height of 12 m. A) What is...
You dropped a 56 g tennis ball from a height of 12 m. A) What is the force of gravity acting on the ball? Air resistance on the ball during the fall is a constant upward force of 0.10 N. B) What is the net force acting on the ball? C) What is the net work done on the ball? Ignore negative signs in final answers (pick downwards as the positive direction) round all answers to 3 sig figs
Laika is pushing a box up an incline of 30?. Laika exerts a force of 20N...
Laika is pushing a box up an incline of 30?. Laika exerts a
force of 20N in the positive x direction (not striaght up the
incline, but into the incline, as shown). Given that the box
started at rest (initial velocity = 0m/s), has a mass of 2kg, and
is accelerating up the incline at a constant rate of 0.5m/s2 for 4
seconds, what is the net Work done on the box? what is the work
done by gravity?
You throw a 0.5 kg rock upward from your hand (which is 1 m off the...
You throw a 0.5 kg rock upward from your hand (which is 1 m off the ground when the rock leaves it). The rock rises to a maximum height of 2.5 m and then falls past your hand to the ground. From the moment you let it go until the moment just before it lands, what can you say about the work that gravity does on the rock? Group of answer choices a. Gravity does negative net work on the...
A ball with a mass of 327 oz. is dropped down vertically from a height of...
A ball with a mass of 327 oz. is dropped down vertically from a height of 1.31 m. The speed right before the ball hit the ground was measured to be 14.5 ft/s. Assuming that the force due to air resistance is constant (and non-zero), what is the magnitude of this force? The initial velocity of the ball is zero. The direction of the force due to the air resistance is opposite to the direction that the ball is moving....
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N friction...
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N frictional force opposes the motion of the box. Use Newtons second law and definition of work to answer the questions below. (a) (1 point) What is the acceleration of the box? as (b) (2 points) What is the net force, acting on the box? Write down Newtons second...
Question 21 5 pts A small space rock of mass m is released from rest a...
Question 21 5 pts A small space rock of mass m is released from rest a very long distance away ("infinity from a planet of mass M and radius R. The rock falls to the planet's surface. What is the network done on the rock by the force of gravity from the initial moment of release to just before it hits the surface of the planet? You can ignore air resistance and assume that the rock falls in along a...
Work from a Constant Force
Learning Goal: To understand how to compute thework done by a constant force acting on a particle that moves in astraight line.In this problem, you will calculate the work done by a constantforce. A force is considered constant if is independent of . This is the most frequently encountered situation inelementary Newtonian mechanics.part AConsider a particle moving in a straight linefrom initial point B to final point A, acted upon by a constantforce .The force (think of it as a...
A 40 kg crate is pulled 50 m along a horizontal floor by a constant force...
A 40 kg crate is pulled 50 m along a horizontal floor by a constant force exerted by a person, Fp = 150 N, which acts as 30 degree angle. The floor is rough and exerts a friction for Ff = 40 N. Determine: a) the work done by each force acting on the crate b) the net work done on the crate
13) A block of mass 2.0 Ag is pushed 2.5 m along a frictionless horizontal table...
13) A block of mass 2.0 Ag is pushed 2.5 m along a frictionless horizontal table by a constant 1o N force directed 28° above the horizontal. The work done on the block by the applied force is. A) 25.0J B) 11.7J C22.0J D) zero What is the total 14) A 0.5 Ag particle has a speed of 4.0 m/s at point A and 6.0 m/s at point B. work done on the particle as it moves from A to...
Imagine that we release a rock of mass m (which is initially at rest) at the...
Imagine that we release a rock of mass m (which is initially at rest) at the surface of a lake and measure its position and velocity as functions of time while it sinks. The rock moves under the influence of three forces: gravity, buoyancy, and viscous drag. Let y represent the vertical position of the sinking rock, with the surface of the lake at y -0, and positive y upwards The net force on the rock is F =-[m-mdisplaced where...
Laika is pushing a box up an incline of 30?. Laika exerts a
force of 20N in the positive x direction (not striaght up the
incline, but into the incline, as shown). Given that the box
started at rest (initial velocity = 0m/s), has a mass of 2kg, and
is accelerating up the incline at a constant rate of 0.5m/s2 for 4
seconds, what is the net Work done on the box? what is the work
done by gravity?
A storeho use worker pushes a box with a refrigerator (mass:96.0-kg) at constant velocity for a distance of 11.0 m. He pushes in the direction parallel to the horizontal floor. A 250.0-N frictional force opposes the motion of the box. Use Newtons second law and definition of work to answer the questions below. (a) (1 point) What is the acceleration of the box? as (b) (2 points) What is the net force, acting on the box? Write down Newtons second...
Question 21 5 pts A small space rock of mass m is released from rest a very long distance away ("infinity from a planet of mass M and radius R. The rock falls to the planet's surface. What is the network done on the rock by the force of gravity from the initial moment of release to just before it hits the surface of the planet? You can ignore air resistance and assume that the rock falls in along a...
13) A block of mass 2.0 Ag is pushed 2.5 m along a frictionless horizontal table by a constant 1o N force directed 28° above the horizontal. The work done on the block by the applied force is. A) 25.0J B) 11.7J C22.0J D) zero What is the total 14) A 0.5 Ag particle has a speed of 4.0 m/s at point A and 6.0 m/s at point B. work done on the particle as it moves from A to...
Imagine that we release a rock of mass m (which is initially at rest) at the surface of a lake and measure its position and velocity as functions of time while it sinks. The rock moves under the influence of three forces: gravity, buoyancy, and viscous drag. Let y represent the vertical position of the sinking rock, with the surface of the lake at y -0, and positive y upwards The net force on the rock is F =-[m-mdisplaced where...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago