narendrakumarpandre21

Perimeter activity 

1. How to calculate Force?

Why is it unscientific to draw a conclusion based on a subjective and global perception. For example, kids really like to play math dodge ball because it improves their math motivation and ability

Given: S (s) + O2 (g) ? SO2 (g) ?H

Using kinematics equations and trigonometric relationships, calculate the muzzle velocity of a steel ball fired from a projectile launcher that is at measured angle of 35.0 degrees above the horizontal when the ball hits a target that is 1.00 m below where the balls leaves the launcher and a horizontal distance of 5.55 m away from the end of the launcher.

A cannonball is fired from the roof of a building, with thecannon's muzzle 54.0 m above the ground, at a muzzle speed of 95m/s and an angle of 30.0 degrees above the horizontal. Calculatethe horizontal distance traveled by the ball during its flight.round answer to 2 sig figs

_____m

A projectile is fired at an angle of 30 degrees in the east (x)direction. its muzzle speed is 400 m/sec let<x(0),y(0),z(0)>=<0,0,0>

a)where is the tangent vector horizontal,and what is its tangentvector there

FeO (s) + Fe (s) + O2 (g) → Fe2O3 (s)
Given the following table of thermodynamic data,

Substance ΔHf(kJ/mol) S(J/mol-k)

FeO(s) -271.9 60.75

Fe(s) 0 27.15

O₂(g) 0 205

Fe₂O₃(s) -822.16 89.96

determine the temperature (in °C) above which the reaction isnonspontaneous.

A projectile is fired with an initial velocity in the x direction of 2.7 m/sec and an initial velocity in the y direction of 6.6 m/sec. At what angle with respect to the x axis was the projectile fired? Please help asap I will give you the highest amount of points I can possibly give!

A projectile is fired with an initial velocity in the x direction of 2.7 m/sec and an initial velocity in the y direction of 6.6 m/sec. At what angle with respect to the x axis was the projectile fired? I got that the angle is 67.75, the resultant initial velocity is 7.13 m/s, and the distance in the +y direction the projectile traveled before its velocity in the y direction is 0 (2.2 m) but I am not sure of the time that i got for the maximum height in the +y direction. I got .66s. Please help asap I will give you the highest amount of points I can possibly give!

What percentage is the maximum range of a projectile if the initial velocity is increased by 10%?

A 700 g block is released from rest at height h0 above a vertical spring with spring constant k = 380 N/m and negligible mass. The block sticks to the spring and momentarily stops after compressing the spring 16.5 cm.

A 700 g block is released from rest at height h0 above a verticalspring with spring constant k = 455 N/m and negligible mass. Theblock sticks to the spring and momentarily stops after compressingthe spring 23.0 cm. (a) How much work is done by the block on thespring? (b) How much work is done by the spring on the block? (c)What is the value of h0? (d) If the block were released from height2.00h0 above the spring, what would be the maximum compression ofthe spring?

Please help!!!
thank you

How much does a spring with a spring constant of 650 N/m need to be compressed in order to store 20.0 J of elastic potential energy?

A spring with a spring constant of 44.0 N/cm has a block attachedto one end and the other end is fixed. How much work does thespring do on the block if the spring is stretched from relaxedlength by 8.3 mm as the block is moved?

How much additional work is done by the spring if it is stretchedby an additional 8.3 mm?

What is the spring constant of a spring that stores 25 J of elasticpotential energy when compressed by 7.0 cm from its relaxedlength?
_____ N/m

What is the spring constant of a spring that is compressed 0.2 m and has 1.50 J of elastic potential energy stored in it?

Determine the elastic potential energy stored in a spring with a spring constant of 125 N/m that is compressed 0.75 m.

A student is running at her top speed of 5.5 to catch a Shuttlebus, which is stopped at the bus stop. When the student is still adistance 39.2 from the Shuttle bus, it starts to pull away, movingwith a constant acceleration of 0.163 .

For how much time does the student have to run at 5.5 before sheovertakes the bus?

For what distance does the student have to run at 5.5 before sheovertakes the bus?

When she reaches the bus, how fast is the bus traveling?

If the student's top speed is 2.80 , will she catch the bus?

What is the minimum speed the student must have to just catch upwith the bus?

For what time does she have to run in that case?

For what distance does she have to run in that case?

How much does a spring with a spring constant of 400 N/m need to be compressed in order to store 8.5 J of elastic potential energy?

6) A student late to class runs at a constant 4.30 m/s to catch a bus. She reaches the bus stop 2.00 s after the bus starts from rest with an acceleration of 0.950 m/s2. Where and when does the student catch the bus?