Search 75,866 tutors

# Find magnifications of image

A 60 cm tall red rose is placed 40 cm from a large convex lens of focal length 20 cm. Locate the position of the image by means of a ray diagram Locate the position of the image by means of...

# What is the focal length of the mirror, the length of the image, and the magnification?

When a butterfly of body length 4.2 cm is 10 cm from a concave mirror, its image is 15 cm behind the mirror.

# Find the magnification of the image

A candle is placed 15 cm from the vertex of a concave mirror that has a focal length of 10 cm.

# If laser beam hits the bullet proof Lexan glass of a bank with an angle of 45 degrees

If laser beam hits the bullet proof Lexan glass of a bank with an angle of 45 degrees. If the index of refraction for Lexan is 1.585 and the index of refraction for air is 1.000293, What is the angle...

# Physics Questions

1. Cart A has a mass of 265 grams. Cart B has a mass of 445 grams. The carts are on a frictionless track. Cart B is initially at rest. Cart A is initially moving towards Cart B at a...

# If it takes 600s for an object to carry out 20 revolutions:

A. What is the period of rotation? B. What is the velocity if the object is 14 cm from the center of rotation? C. What is the centripetal force on a 35 g mass spinning 14 cm from the center...

# Physics Questions

1. Make two free body diagrams for a falling coffee filter: one at the instant when it is released and the other after it has reached terminal velocity. Your diagrams should include numerical values...

# Air Resistance

1. Give three factors that affect the amount of air resistance an object experiences, and describe how each factor influences air resistance (will the air resistance go up, or go down if that variable...

# phy (force)

A helicopter of mass 2500 kg carries a bucket of water to fight a wildfire.The total mass of the bucket is 2000 kg.the helicopter accelerates horizontally and the suspension cord makes an angle of...

Compute the normal force on the block. M=47.3 kg and theta=31.0 degrees

# how does a hot air balloon stay at neutral buoyancy?

i have to explain this on a paper and i dont know how to start

# Physics speed

A calcium ion Ca++ enters with zero velocity a region of uniform electric field of 200N/C pointing east.  What is its speed after 50ms? (Symbol of calcium atom is 20Ca40)

# Physics help

13. A water droplet of radius 0.018mm remains stationary in air. If the downward electric field in 150N/C, how many excess electrons must the droplet have?

# Physics help

An electric dipole consists of a pint charge -q at the point (0,a) and a point charge q at the pint(0,-a). Find the electric field at the point (x,0).

# why does one cool faster

58. Which has the higher specific heat capacity: an object that cools quickly or an object of the same mass that cools more slowly?

# why is his feet not cut

. The photo shows physics teacher Marshall Ellenstein walking barefoot on broken glass bottles in his class. What physics concept is Marshall demonstrating, and why is...

# what is the formula

. Show that the water pressure at the bottom of the 50-m-high water tower in Figure 5.3 is 490,000 N/m2, or is approximately 500 kPa

# is there a difference

In a sporting goods store you see what appears to be two identical life preservers of the same size. One is filled with Styrofoam and the other one is filled with lead pellets. If you...

# Given the vectors below, determine the resultant and the equilibrant using trigonometry.

230.0 newtons @ 125 degrees 175.0 newtons @ 60.0 degrees

# From Graphical Analysis

Please help me with this. It looks long, but it really is not. A physics student wants to determine the relationship between the radius of a charged conducting sphere and the magnitude of...