Search
The sun has a mass of 1.99 * 10^30 and the earth has a mass of 5.98 * 10^24kg. If the force of gravity between the sun and the earth is 3.55 * 10^22N how far is the earth from the sun? What is the tangential speed of the earth around the sun?
The doctor measured the count rate from the sample. the count rate was 80 seconds per second.
half life of radium-226 = 1600years
calculate the count rate in 6400 years
Consider an automobile moving at v mph that skids d feet after its brakes lock. Calculate how far it would skid if it was moving at 2v and the brakes were locked.
Your search - a turntable is a uniform disk of mass 12kg and radius 0.13metres. the turntable is spinning at initial constant frequency of 33 cycles per minute. the motor is turned off and the turntable slows down to a stop in 8 seconds due to frictional torque. what is the magnitude of the frictional torque acting on the table -
An image 3 cm tall is formed 11 cm from the vertex of a mirror with a focal length of 5 cm.
Determine the distance to the object (d o ) and the height of the object (h o ).
Include units in your answers as you fill in the table.
Show your calculation of the image location.
Show your calculation of the image height.
Show your complete graphical solution to this problem.
An object 1.0 cm tall is placed 5 cm from a concave mirror with a centre of curvature of 4.5 cm.
Include units in your answers as you fill in the table.
Show your calculation of the image location.
Show your calculation of the image height.
Show your complete graphical solution to this problem.
A 2 cm tall object is placed 3 cm from a concave mirror. The focal length is 5 cm.
Include units in your answers as you fill in the table.
Show your calculation of the image location.
Show your calculation of the image height.
Show your complete graphical solution to this problem.
A 1.5 cm tall object is placed 3cm from a concave mirror. The focal length is 2 cm.
Include units in your answers as you fill in the table.
Show your calculation of the image location.
Show your calculation of the image height.
Show your complete graphical solution to this problem.
The driver of a 2.0 × 103 kg red car traveling on the highway at 45m/s slams on
his brakes to avoid striking a second yellow car in front of him, which had come
to rest because of blocking ahead as shown in above Fig. After the brakes are
applied, a constant friction force of 7.5 × 103 N acts on the car. Ignore air
resistance.
(a) Determine the least distance should the brakes be applied to avoid a
collision with the other vehicle?
(b) If the distance between the vehicles is initially only 40.0 m, at what speed
would the collision occur?
(c) Write your conclusive observations on the result obtained from this
numerical. I.e. the importance of Physics in daily life.
Solution
3
3
:
2.0 10
45 /
7.5 10
Given data in this Question
mass of the car is kg
velocity of the car is u m s
final velocity v
Friction force is kg
A non-uniform zinc rod 60cm weighs 32N is balanced at the 45cm mark. A load of 2N is hung on the zinc rod at the 25cm mark. Where should a second knife-edge be placed to balance the rod horizontally
#339914 on Dec 2023