Suppose the ends of the rail are rigidly clamped at −5 ◦C to prevent expansion. Calculate the thermal stress in the rail if its temperature is raised to 35 ◦C. Young’s modulus for steel is 20 × 1010 N/m2 . Answer in units of N/m2 .

The table below shows the acceleration of gravity on different bodies in the solar system. on which body would a 10 kg lamp has the most gravitational potential energy when lifted to a height of 2 m? a. earth b. mars c. neptune d. uranus

Both independent and dependent clauses

Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s