a surveyor uses a steel measuring tape that is exactly 50.000 m long at a temperature of 20°C. what is the length on a hot summer day when the temperature is 35°C? Average coefficient of linear expansion α for steel is 1.2 x 10^-5 K^-1

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.